petrosccd

Geia sou Gianni, Oraia i nea sou selida, alla den mporousa na do kamia eikona... Den tis exeis fotrosei akoma or einai problima tou browser? A kai to link sto site mou den isxiei... den yparxei pleon i selida... Petros

Gia ta MEADE apoklistikos antiprosopos einai o Nomikos ston Peiraia, mono autos mporei na sou apantisei. Des edo: http://www.telescopeshop.gr Petros

Avior, Ta sfalmata einai diaforetikis morfis kai ofeilontai sta sfalmata metrisis tis thesis tou asteroeidous. Ta asteroeidoi einai men polla alla oxi toso polla oste oi metaksi tous synantiseis na einai syxnes (px ligotero apo 1000 xronia)... Kai dedomenou oti tora pleon einai dynaton na ginei ypologismos me poly megali akribeia ton epidraseon ton Planiton, an kaneis exei paratiriseis akribeias gia arketo xroniko diastima mporei na ginei ypologismos tis troxias gia aiones, me akribeia pou epitrepei na doume an tha yparxei proskrousi me tin gi i oxi. Paratireiste oti to 2002 NT7 aposyrthike entelos apo to risk page tou JPL, opos eixa problepsei, pragma pou metafrazetai oti pleon den yparxei kamia pithanotita sygkrousis ta epomena 100 xronia!!! Petros

Stin Agglia xoris idiaitero logo dothike poly emfasi sto en logo antikeimeno... Prin merikes meres eida efimerides me titlo: "Asteroid Strikes Earth"! Aparadekto, kai pera gia pera analythes! To en logo asteroeides exei pleon -4,46 stin klimaka tou Palermo kai 0 stin klimaka tou Torino. Den yparxei apoloitos kamia pithanotita gia sygkrousi to 2019, eno i pithanotita gia sygkrousi to 2060 einai pleon 1 sto dis! Se ligo kairo den apokleietai na aposyrthei entelos apo to risk page tou JPL: http://neo.jpl.nasa.gov/risk/ Auti i istoria epanalambanetai kathe fora pleon pou anakalyptetai ena neo asteroiedes pou plisiazei tin gi... Auto ofeiletai se kaki dimosiografia kai pantelos asxetous epistimonikous arthrografous. Kathe tetoio asteroieides molis proto-anakaleiptetai tha exei ena poly mikro arithmo paratiriseon kai sinepos ta sfamlata ston ypologismo tis troxias tha einai toso megala oste sxedon panta na yparxoun kai lyseis pou dinoun sygkrousi me tin gi, an kaneis psaksei arketes dekaeties (giati to sfalma sti thesi auksanei me ton xrono). Synepos kaneis ypeuthinos den mporei na apofanthei gia to poso pithani einai i sygkrousi enos tetoiou asteroieidous prin yparksoun arketes paratiriseis (diladi toulaxiston enas-dio mines kai oxi mia-dio ebdomades -to 2002 NT7 brethike stis 9 Iouliou molis prin 3 ebdomades)... Petros

Geia sou Sergie, Dystixos tileskopio pou na kanei oles tis douleies den yparxei... O kathe sxediasmos einai kalyteros gia kapoiou eidous paratiriseis kai xeiroteros or aparadektos gia kapoies alles. Exontas loipon ksekatharisei auto, to 8" S/N einai safos tileskopio gia deep-sky. An kai o sxediasmos einai kalyteros apo tou klasikou SCT apo apopsi anoxon, den nomizo oti to tileskopio auto exei ftiaxtei me tin planitiki paratirisi sto myalo tou sxediasti (min se ksegela to mikro stirigma tou deuteontos pou fainetai -opos ksegelastika arxika ego- prepei apo piso na einai ena megalo deutereuon opote i kentriki empodisi tha prepei na einai antistoixi me SCT ~35%)! Safos to dynato tou simeio einai mallon i fotografisi eurion pedion, alla amfybalo oti mporei na ginei me auti ti basi pou einai ftiagmeni gia optiki douleia. To 5" apo tin alli, prepei na einai ena arketa aksioprepes axromatiko -eidika an kaneis tin euthigramisi tou fakou. Ostoso min perimeneis thaumata. Gia tin planitiki paratirisi prepei ta optika sou na einai poly kala! Sto review pou sou edosa link leei oti to eidolo arxizei na spaei pano apo 200x... Ara na perimeneis apodosi antistoixi enos 4" kalou axromatikou. Gia tin erotisi sxetika me an to S/N einai kalytero enos Newtonian, an milame gia planitiki paratirisi opou xreiazetai kai i optiki poiotita, safos oxi... To tileskopio exei ftiaxtei poio poly san fotografiko eurion pedion -ara min anameneis kali optiki poiotita se megenthynseis pano apo 100x. Kai auto pou leei i MEADE gia to oti blepeis skies doryforon na probalontai sto Dia, auto den leei tipota... giati blepeis autes tis skies akoma kai me poly mikra (alla kala) tileskopia. Px exo dei arketes fores tetoies skies me ena 6cm axromatiko se 120x! A ena page me eikones apo ta S/N einai edo: http://www.lefevre.darkhorizons.org/ccdimaging/pdlccd.htm Paratiriste omos oti den eginan me tin GOTO basi tou idiou tou tileskopiou, alla fortonontas to tube se Losmandy G-11... Pantos auti i syzitisi fernei stin epifaneia to pragmatiko problima stin agora tilskopion kai auto pou pragmatika me enoxlei: oti eno milame gia pragmata pou prepei na exoun prodiagrafes gia na einai stoixiodos leitourgika, telika polountai san gourouni sto saki me basi kai mono tin diafimisi! Pou leei typical kai max wavefront error gia ta tileskopia tis paragogis? Pou leei typical kai max pk-pk periodiko or tracking error?? Pou leei to poio aplo, to max baros pou pernei i basi?? Kai den to leo mono gia tin MEADE, alla gia oles autes tis megales etairies pou poulane tileskopia san an poulane paixnidia... Petros [ 08 Ιουλίου 2002: Το μήνυμα τροποποιήθηκε από: petrosccd ]

Epeidi ousiastika kaneis mas den exei dei auta ta tileskopia kalo einai na psakseis sto web gia kana review... Ena poly kalo kai eksonixistiko review gia to 5" LXD55 tha breis edo: http://www.cloudynights.com/reviews2/LXD55.htm Ta basika themata pou episimainei einai: - Kali i basi kai i odigisi gia optiki douleia(exei omos ontos problima talantoseon opos perimena) - ta optika einai kala xoris xroma, alla oxi ekseretika kai kyrios mporei na yparxei problima euthigramisis tous fakou... Episis na paratirithei oti auta ta tileskopia ouistika einai Kinezika! Sta S/N ta optika logika prepei na ginontai apo tin MEADE -o Schmidt corrector den ftiaxnetai eukola- alla ta dioptrika einai apo ta perifyma Kinezika axromatika (douleuoun alla min perimenetai kai polla pragmata), auto dikaiologei kai tin poly xamili timi... Episis, an kai i MEADE den dinei specs gia ta S/N eida oti i basi einai 16Kg kai to 10" OTA ~40Kg! Sigoura auti i basi einai kapos mikri gia auto to tileskopio! Tha einai oti prepei gia to 6" kai kali gia to 8", alla to 10" mallon peftei megalo! Basika Sergio ti se endiaferei na kaneis? Kathara optiki paratirisi? Kyrios planites, deep-sky? Or se endiaferei pio poly i astrofotografisi/CCD? Petros [ 07 Ιουλίου 2002: Το μήνυμα τροποποιήθηκε από: petrosccd ]

Antrea, Ta links pou sou dinei o Greg einai ontos auta pou prepei na symbouleuesai! Kalo einai na tsekareis to calendar tou IMO pou gia to 2002 einai: http://www.imo.net/calendar/cal02.html Kato-kato sti selida (Table 5) dinei oles tis broxes me imerominia... Kalo einai apo kei na epilekseis mono broxes me ZHR (proteleutaia stili) pano apo 10, giati allios mperdeueis ton kosmo, den yparxei periptosi na doune kati! Opote ta minor showers pou mporei na exeis simeiosei ksexase ta einai gia poly empeirous paratirites! Polla apo auta den einai kan apodekta apo olous... Petros [ 06 Ιουλίου 2002: Το μήνυμα τροποποιήθηκε από: petrosccd ]

File Suhail, Katarxas exeis dikio nai ego eimai ontos autos pou anafereis, oloi kseroun poios eimai den to exo mystiko! Apla exeis xasei episodio me to rama se proigoumeno post mou. Ekei edyna kai to email pou anafereis, opote ekseplagein pos kapoios pou to diabase einai dynaton na me syndese me ton en elogo syllogo(des to post me titlo Paratiriseis)... Alla profanos den to exeis diabasei, opote sou zito sygnomi, se pareksigisa! Safestata den apolambano tetoiou eidous syzitisi, den einai dimiourgiki, alla otan kapoios synexizei na ypostirizei ena psema kapoios prepei epitelous na balei ta pragmata stin thesi tous! Katarxas o en logo syllogos an kai ton ksekinisame me kalles proipotheseis (kai opos les kai esi me skopo sobares paratiriseis -an kai ego pote den eimoun yper "austiron kritirion eisagogis" giati eksipiretoun mono entyposeis), pote den egine episimos (para tis polyarithmes idritikes synantiseis) synepos i egrafi sou ekei einai katarxas adynati! Epipleon stin poreia diapistosa oti kai ta peri sobaron paratiriseon pou legame arxika itan logia tou area... Malista kai oi synantiseis (pote omos se kanonika diastimata) tou omilou eixan katantisei koinonikes ekdiloseis, me ena pseutiko typiko syllogou, opou ektos apo kana-dio dialekseis, ousistika den syzitiotan kan astronomia! To teuxos tou ouranou pou eides bgike anti praktikon gia to 1o Panellinio Synedrio Erasitexnikis Astronomias to opoio egine to 1999. H enosi profanos den itan oute tote episismi kai malista paratirise oti o ekdotis tou Ouranou exei grapsei authaireta (alla kalista exei to dikaioma afou kai o syllogos den yparxei) "Elliniki Astronomiki Enosi Athinon". Kanonika afou o syllogos den yparxei den tha eprepe na anaferthei tipota... Kai gia na ksekathariso ti thesi mou, emena den me peirazei akoma kai atypos na einai o syllogos arkei auto na dieukrinizetai (to eides pouthena sto page tous? Den dinei tin pseudi entyposi oti einai pragmatikos syllogos?)! Episis kai to poies einai oi drastiriotites prepei na dieukrinizetai! Pragmatika den mporo na katalabo ti eksypiretei na syntiritai ena psema. Afou to pragma to blepoun ontos kathara xompistes (megia tous me xara tous) giati na min to lene? Kako einai? Mipos den einai oi idioi euxaristimenoi me ton eauto tous?? Dystixos se auti ti xora exoume synithisei na eimaste oti dilonoume oxi na dilonoume oti eimaste... Elpizo na sou ksekatharisa to topio! Tora i astronomia gia kapoious einai apla ena hobby, gia kapoious allous omos einai kati parapano! Ego prosopika den exo kanena apoloitos problima me ton aplo xompista or star-gazer (or astrofotografo) an protimas, xairomai na milao mazi tou kai arketes fores malista tha to paikso kai ego touristas tou diastimatos! Ostoso prosekse oti kai i sobari paratirisi, an kai se proti fasi fainetai kourastiki, agkaria kai safos oxi fun, den einai etsi omos, apla kaneis xreiazetai bathiteri gnosi gia na to ektimisei... i xara einai allis morfis kai erxetai otan i douleia sou exei apodosei! (eno safos mporeis na exeis tin xara oti kai esi bazeis ena litharaki). Gia tin Australia, to mono pou mporo na po einai oti poly tha ithela na erxomoun mazi sou (nai apla gia na thaumaso ta thaumata tou Notiou Ouranou)! Petros

Thes na peis stamatas mia syzitisi otan stereuoun ta epixeirimata sou... Ego ekana mia apli erotisi, nomizo tha mporouses na apantiseis... To oti tin apofeugeis, kati leei.. Petros

File gr0001, An deis ta specs tis E-20P pou les tha diapistoseis oti: a) i pragmatiki analysi einai 2.5Mpixel (ta 5 einai me interlacing -den douleuei stin astronomia) b) exei TIFF uncompressed, alla kanei on-board epeksergasia tis eikonas, opote ksexna tin dynatotita na tin xrisimopoiiseis gia kati ousiastiko... c) einai RGB-interlaced (sigoura me interline-transfer CCD) pou metafrazetai oti i euaisthisia den tha einai oute to 10% stin kalyteri periptosi mias antistoixis astronomikis CCD... d) Ta 8-lepta einai aplos kati tou logismikou, giati se thermokrasia domatiou mporeis na ksexaseis ektheseis megalyteres ton merikon dekadon to poly deuterolepton (to CCD tha paei ston koro logo tou reumatos skotous). To allo pou thelo na sou epispeuso tin prosoxi einai: to oti leei SLR den simainei oti mporei na bgei o fakos!! (to SLR simainei oti blepeis mesa apo to fako) Den to epsaksa gia tin sygkekrimeni, alla exo tin entyposi oti o fakos einai monimos... Telos to oti oi astronomikes CCD exoun kalodia, koutia ilektronikon (oi epagkelmatikes kai kykloforiti ygrou or kryostati ygrou-azotou) den einai tyxaio. Kai o logos einai oti exoun specs pou einai entelos diaforetikis morfis (toso QE, tosa electrons readout noise, tosa electrons dark current se -XX bathmous thermokrasia, klp). Auto den symainei oti an pareis mia psyfiaki san auti pou les den tha exeis kanena apotelesma, kati tha bgaleis, endexomenos akoma kai se deep-sky antikeimena... Ostoso mporeis na kaneis mono pretty-pictures, ksexanas tin ousiastiki astronimiki douleia pou aneta tha mporouses na kaneis me tin pio ftini astronomiki CCD! Elpizo na boithisa, Petros

File rama, Nomizo i siopi sou milaei apo moni tis... Petros

Grigori exeis dikio, opote tha to tropopoiiso na deixnei to sosto mina! Petros

Xoris na ta exo dei ego tha sou proteina to 8". Giati proton i diametros einai pou metraei kai apo apopsi analysis (an milame gia optika me kali poiotita pou exei i MEADE) kai apo apopsi syllektikis ikanotitas fotos. Epeidi to S/N exei etsi kai allios poly mikri kentriki empodisi den yparxei alytheia sto na milame gia meiosi tou contrast se sxesi me to dioptriko. Etsi kai allios kai megaliteri na itan i empodisi to sxedon diplo diametrima kanei tin diafora telika! Deuteron to dioptriko gia na exei pragmatika tin apodosi pou mporei na exei prepei na einai ekseretikis kataskeuis, opote ego tha eimoun epifilaktikos me ena sxetika ftino apoxromatiko. Ego malista tha sou proteina na pareis to 10", afou i diafora einai molis ~300 Euro... afou kaneis tin agora pare to megalitero dynato tileskopio pou mporeis kai tha me thymitheis! To mono pou tha sou epispeuso tin prosoxi einai oti eimai sigouros oti ola auta ta tileskopia exoun problima me talantoseis giati exoun tin idia basi me ta proigoumena LXD-500/300 pou eixan poly elafri alouminenio tripodi. An alakseis to tripodi me ena ksylino, or prostheseis baros sta idi yparxonta to problima mporei na lythei... Or akoma kalytera ftikse ena monimo pylona kai bale epano tin basi an exeis auti tin euxairia. Petros

Nai re Grigori, einai dynaton oi Persides na pigan ena mina mprosta?? Typografiko lathos, profanos enoousa Augousto oxi Ioulio... Petros

Rama, Giati arage den apantas stin ksekathari erotisi mou?? Giati arnise na paradektis to profanes?? Mipos auto deixnei oti yparxei kapoia ysteroboulia sti xrisi tou orou "sobaroi paratirites" apo ton en logo "syllogo"?? Allios den fantazomai na einai problima na peis: nai eimaste star-gazers... (or advanced astro-mpanistirtzithes isos tairiazei kalitera) Petros

Andrea, Afou se synxaro gia tin prospatheia sou, tha ithela na paratiriso oti stin teleutaia miniaia anafora sxetika me to ti blepoume stoun ourano tin periodo tou kalokairiou, exeis arketa lathi sto kommati pou anaferesai sxetika me tis broxes diattonton! Proton anafereis broxes pou einai "minor" kai synepos to poly kaneis blepei 2-3 diattontes apo poly skoteinous ouranous kai mono! Episis prepei na tonistei oti polles apo autes tis broxes den einai epibebaiomenes, or apodektes apo olous akribos logo tis para poly xamilis drastiriotitas! Tetoies paratiriseis opos katalabaineis ginontai mono apo poly empeirous paratirites. Epeisis den mporesa na diastauroso kapoies apo tis broxes pou anafereis... Px auti pou les stis 15/16 Iouliou ston Omfiouxo den katalabaino pou ti brikes. Ekeini tin periodo yparxoun oi Foinikides (14/15 July) -mono apo B.imisferio, kai alles dio broxes (a-Lyrides kai omikron-Drakonids pou den einai kai epibebaiomeno) kamia ekei pou anafereis... Telos panton to thema einai oti kalytera min anafereis broxes me ZHR<10 kathos pragmatika einai dyskolo kaneis na tis paratirisei kai an kapios parasyrthei kai prospathisei, tha apogoiteutei! Ousistika tin periodo Iouliou-Augoustou kaneis mporei na paratirisei tis ekseis broxes: * Noties delta-Ydroxoeides {ZHR~20}, me euri peak gyro apo tis 28 Iouliou. * Persides {ZHR~100} me peak stis 12/13 Augoustou, ousiastika i drastiriotita paratiritai tin periodo 10-15 Augoustou... * Alpha-Aigokairides {ZHR~10}, me euri peak 1/2 Augoustou... * Alpha-Hnioxoeides {ZHR~10}, me euri peak ~31 Augoustou. Na paratirithei oti oles autes oi broxes epeidi parousiazoun drastiriotita gia megales periodous -typika ena mina gyro apo tin imerominia tou peak- otan kanoume paratirisi ton Augousto sympiptoun! Synepos o paratiritis as kserei oti an paratirei tis Persides den anikei kathe diattontas pou blepei stis Persides! Mono an fainetai na aktinobolei apo ton Persea... Mia teleutaia paratirisi: Oi Persides den eksafanistikan to 2000 opos anafereis! H drastiriotita itan kanoniki, auto pou symbainei einai oti edo kai deka xronia exei parousiastei ena deutereuon peak to opoio exei sxedon eksafanistei. Na doume, tha emfanistei pali fetos?? Petros [ 05 Ιουλίου 2002: Το μήνυμα τροποποιήθηκε από: petrosccd ]

Molis pio pano aneferes -synainontas sto "advanced": > αγνόησε τα αρνητικά σχόλια για τα μέλη της Ενωσης και κρίνε για τον εαυτό σου εάν είναι σοβαροί αφού τους έχεις γνωρίσει. > Xoris ego na exo kanei nyksi peri sobarotitas or oxi (opoios exei ti miga)... To opoio parapembei ostoso se proigoumeni syzitisi mas opou eixa kanei tin erotisi: > yparxoun atoma pou tha ithelan na asxolithoun me sobari paratirisi? (sobari paratirisi enow, paratirisi pou den ginetai me kathara psyxagogiko xaraktira -stargazing diladi, or astrofotografisi) > Kai esi eixes apantisei: > Πέτρο, δοκίμασε την διεύθυνση www.astronomia.org.gr της Ελληνικής Αστρονομικής Ενωσης, ενός καλού συλλόγου για σοβαρούς ερασιτέχνες .... > Pou simainei oti to "sobari paratirisi" kai esi to eixes antilyftei oxi san star-gazing -afou to tonizo rita... Ara den tithetai thema sxetikotitas tou orou sobaros paratiritis (or tou ksenikou "advanced"), as min krybomaste loipon piso apo to daktylo mas, ousiastika oloi kseroume ti enooume... Allios, entaksi mporoume na poume oti gia kapion kalista: sobaros paratiritis = autos pou kserei na bazei to prosofthalmio ston estiasti... Kai gia na ertho sto epi toutou, esi me basi loipon tin diki mou ermeinia tou sobarou paratiriti (an dekto oti einai sxetikos o oros) pou symainei ousiastikes paratiriseis me oxi psyxagogiko xaraktira, alla me skopo tin paragogi aksiopoiisimon dedomenon tha eleges oti i "enosi" antapokrinetai?? Petros [ 04 Ιουλίου 2002: Το μήνυμα τροποποιήθηκε από: petrosccd ]

Oraia, ara symfoneis mazi mou oti o oros "advanced" pou xrisimopoiithike sto proto post kai esi syneneses amesos meta, den tairiazei stin periptosi tou en logo "syllogou"... Petros

Den eipa ego to antitheto. Alla to dis eks amartin ouk andros sofou... Tora otan epimeneis na autoapokaleise "advanced" xoris na plireis tis sxetikes proypotheseis tote arxizo na anarotiemai mipos eisai kakoboulos? Ti prospatheis na epityxeis? Einai aplos i typiki Elliniki symperifora stous syllogous opou theoroume tous eautous mas "advanced" giati den yparxei se amesi thea to pragmatiko "advanced"? Kai otan kapoios mas to ypodeiksei tote arxizoume ta peri agouridon?! Ego pragmatika den exo kanena problima o kathenas na kanei auto pou tou aresei, thes eksormiseis "astrompanistiriou" einai, synantiseis "syllogon-tsagiou" (auto einai apo allo anekdoto)... Mpravo kamia antirisi! Alla otan epimenoume na autobaptizomaste oti dithen ekprosopoume kati pou den exoume sxesi tote NAI exo problima! Kai anarotiemai ti skopimotites eksipiretoume?? Kanenas allos syllogos stin Ellada den autoapokaleitai gia "advanced observers", eno yparxoun omades sto idio kai ypsilotero epipedo! Petros

Rama, Praktika to proigoumeno post tou Nefelegerti me kalypse sxetika me ton typiko mytho xronou, xrimatos, eksoplismou... Den exo tipota epleon na prostheso, etsi kai allios to thema exei syzitithei kai alles fores se auto edo to forum! Kai ontos kaneis fotometria kanei kai me ena zeugari kyalia an yparxei i diathesi (malista yparxei omada stin Athina pou kanei auti tin douleia... oi opoioi ksekopsan apo ton en logo "syllogo" otan arxisan auti tin drastiriotita -giati arage?). Aplos ego tora anarotieme, mipos eisai anepidektos mathiseos?? Giati an i moni paratirisiaki drastiriotita einai oi en logo eksormiseis tote to "sobaroi paratirites" pou epimeneis, pou kolaei?? Diladi kanoun sobaro "astrompanistiri"? Etsi to enoeis? Petros

Rama, Pragmatika aporo pou eides ta pikroxola sxolia sto proigoumeno mou post?? Aplos aporisa pos anaferthika... (kai malista san peter_ccd kai oxi petrosccd) Esi rama, nomizo oti esi eisai safos kataliloteros apo mena na doseis tis plirofories pou zita sxetika me tous "advanced observers", afou mporeis na gefyroneis to "astrompanistiri" (opos apokaleis tin paratirisi se proigoumeno post sou) me tin fotometria kai tin astrometria pou pragmatopoieitai stis eksormiseis (kata tin diarkeia tou ypnou eimai sigouros)! Petros

Yparxoun psifiakes kameres se morfi SLR, opos px i Canon D60 pou prosfata kapoios mou ypedeikse (ostoso i D60 den einai kan CCD -exei CMOS sensor)... Ostoso epeidi tetoies mixanes einai gia kathara epagkelmaties fotografous oi times einai poly tsouxteres (i D60 px exei $3500)! Merikes apo autes tis kameres exoun tin dynatotita na kanoun kai megaliteres ektheseis, alla oi perisoteres den yperbainoun ta 1-2 deuterolepta max... Synepos kaneis den mporei na kanei tipote allo para planites. Ena allo symantiko thema einai i sympiesi JPEG pou kanoun oles autes i kameres gia na apothykeusoun polles eikones se mia mikri karta mnimis. Logo autis tis sympiesis den mporei kaneis na xrisimopoiisei mia tetoia mixani -akoma kai an einai SLR kai kanei megales ektheseis- gia photometria, astrometria klp... Otan milame gia aples fotografikes mixanes kaneis tha prepei na exei sto myalo tou oti den einai ftiagmenes gia astronomiki douleia, alla gia na pernei kaneis fotografies ypo fotismo domatiou to ligotero, kai synepos den mporoume na perimenoume optimum apotelesmata. Synepos o thorybos se tetoies mixanes einai aparedektos gia astronomiki xrisi, i euaisthisia xamili, psyksi den yparxei klp... Synepos den synistatai i agora tetoias mixanis gia astronomiki xrisi... Apo tin stigmi pou mporeis na diatheseis ta lefta pare mia kali astronomiki CCD (min skefteis se kamia periptosi na kaneis ekptoseis -kato apo 1000 Euro den perneis aksiprepeis kamera)! H MX5 einai mia aksioprepis CCD pou perneis me auta peripou ta lefta... An mporeis na diatheseis perisotera (2000-5000 Euro) tote pas se SBIG, Apogee, or isos kalyteres FLI! (oi MEADE kalo einai na apofeugontai) Petros [ 03 Ιουλίου 2002: Το μήνυμα τροποποιήθηκε από: petrosccd ]

Mallon enoeis emena... Alla pou ebgales to symperasma oti eimai melos tou en logo "syllogou"? Kai deuteron pou akouses oti einai gia "advanced observers"? Giati ekei pou sou to eipan tha kseroun kai pos na egrafeis... Petros

Giorgo, O Kostas exei dikio. Akoma kai xoris CCD yparxoun arketa pragmata pou kaneis mporei na kanei akoma kai optika, aloste stin Athina yparxei kai mia omada pou kanei paratiriseis foteinon metabliton me kyalia!!! Kai gia na ksekatharisoume auti tin typiki dikaiologia: den yparxei den mporo, mono den thelo! (to opoio einai bebaia sebasto). Petros

Giorgo, Den nomizo oti ston ourano tis Kypselis exeis problima stin planitiki paratirisi! Auto pou anafereis isxiei gia paratiriseis pou epireazontai apo tin foteinotita tou ouranou... Bebaia oi poleis mporei na min einai idanika meroi gia paratirisi, alla genika planites mporei kaneis na kanei me ekseretika apotelesmata! Deuteron me ta CCD simera kai i foteinotita tou ouranou den empodizei stis perissoteres paratiriseis opos px i fotometria foteinon asteron (kai to foteinon to enow <14mag pou profanos sou deinei ena terastio arithmo stoxon). Petros