Jump to content

Fred Ley

Μέλη
  • Αναρτήσεις

    1731
  • Εντάχθηκε

  • Τελευταία επίσκεψη

  • Ημέρες που κέρδισε

    1

Όλα αναρτήθηκαν από Fred Ley

  1. Fred Ley

    C14-another View

    From the album: Personal Gallery Of Fred Ley

    Another view on the same night.
  2. Fred Ley

    C14

    From the album: Personal Gallery Of Fred Ley

    Observing on October 9, 1999 with Tom Hames C14.
  3. Fred Ley

    6-inch Mount

    From the album: Personal Gallery Of Fred Ley

    A larger sized image of the 1.5-inch mount. The photo has been posted here before, but at a smaller size.
  4. Fred Ley

    6-inch Refractor

    From the album: Personal Gallery Of Fred Ley

    The Cave 6-inch refractor set up in 2003.
  5. Fred Ley

    Endeavour: Last Flight

    It is now in the LA area at 2156 Athens time. Well, in a couple of hours Endeavour will end its final mission at LAX (Los Angeles airport) atop the 747. NASA tv should carry live coverage of the event. It is scheduled to land between 12:00 p.m. and 1:00 p.m. (which is between 10 p.m. and 11 p.m. Athens time). NASA tv can be found at http://www.nasa.gov/multimedia/nasatv/index.html Here is a couple of L.A. tv station sites... KTLA http://www.ktla.com/ KCBS http://losangeles.cbslocal.com/ KNBC http://www.nbclosangeles.com/ (they have good quality "live" coverage) -Fred
  6. Fred Ley

    C2011F1(LINEAR)

    Nice image. It is interesting to see the movement of the comet over a ten minute period. -Fred
  7. Fred Ley

    Πέθανε ο Νιλ Άρμστρονγκ

    Yes, very sad news indeed. At the time I was 12 years old and I remember watching the Apollo 11 lunar landing at home on that special day in 1969. Back then they only had black and white tv here in Athens, but who cares. The event was was literally "out of this world". Lets keep reaching for the stars. -Fred
  8. Fred Ley

    Jupiter 2012-08-08

    John, Very nice image. I love the satellites. -Fred
  9. Fred Ley

    Pendeli Observatory

    From the album: Personal Gallery Of Fred Ley

    Here is a panorama. looking South. from the tower that houses(d) the 10-inch Razdow Solar Ha telescope at Pendeli Observatory. This sequence of photos were taken in 1974.
  10. Fred Ley

    Solar Radio Telescope

    From the album: Personal Gallery Of Fred Ley

    Located at the Pendeli Observatory, this telescope gave the total solar flux density in four frequencies, 1415, 2695, 4995 and 880 MHz. The diameter of the dish is 100-inchs (250 cm). It was originally operated by the USAF Air Weather Service.
  11. That's an interesting photograph. Due to the Earths rotation, the star "trail". The boats look out of focus due to the currents in the water, while the leaves in the tree are sharp due to no wind. Nice! -Fred
  12. Fred Ley

    CURIOSITY Rover

    Aw right!!! Way to GO!!!
  13. Fred Ley

    CURIOSITY Rover

    I hope that Curiosity lands safely, I'll be watching the JPL feed. -Fred
  14. Fred Ley

    PGC catalogue

    I will have to research that. Another nice program that I have is titled C2A Planetarium Software. When one activates the PGC catalog, the letters PGC and the number show up next to the galaxy. I will have to check on to print from the C2A program. It may be easier than Cartes du Ciel. Fred
  15. Fred Ley

    PGC catalogue

    Yes, when one goes to install the main program, prior to adding the additional catalogs, it shows that the program being installed is Cartes du Ciel. So I don't believe that you will have issues. I will go ahead and see if I can download the catalog to my pc. I already had the file loaded. It is labeled PGC/LEDA. -Fred
  16. Fred Ley

    PGC catalogue

    There is an atlas on this site that offers the PGC catalog among others. http://www.stargazing.net/astropc/oldversion/download.html -Fred
  17. Sounds like fun. I'll see if I can get there. -Fred
  18. Hi, A 6-inch Newtonian will show a lot of things in the night sky. Al of the Messier objects, throw in the Veil Nebula in Cygnus (no filter needed, as I have seen it in a 4.5-inch Newtonian), and more. A telescope does one thing-collect light. The difference that come into play is the type of material for the primary and secondary, temperature changes at the observing site, the atmospheric seeing conditions, dew (I once had a C8 dew up on me and then the dew turned to ice)-a dew shield was in use at the time, and if the secondary is the same secondary that was used to obtain the final figure on the primary mirror. If the primary displays a texbook optical figure and the seondary is not that good, there will be issues. If one wants to observe galaxies, you can get away with a lot and not have the mirror made to very exacting tolerances. One is interested in just sucking up the light. A 6-inch mirror gives you 28.26 square inches of surface and an 8-inch mirror will give you 50.24 square inches of surface area. We are talking about almost twice the surface area. Either way, you should have a lot of good times with either scope. Have fun and clear skies, -Fred Translation Through GOOGLE Translate Γεια σου, Ένας 6-ιντσών νευτώνεια θα δείξει πολλά πράγματα στο νυχτερινό ουρανό. Αλ των αντικειμένων Μεσιέ, ρίχνει στο νεφέλωμα Veil στο Κύκνου (δεν απαιτείται φίλτρο, όπως έχω δει σε ένα 4.5-ιντσών Νευτώνεια), και περισσότερο. Ένα τηλεσκόπιο έχει ένα πράγμα-συλλέγουν φως. Η διαφορά που μπαίνουν στο παιχνίδι είναι το είδος του υλικού για την πρωτοβάθμια και δευτεροβάθμια εκπαίδευση, τις αλλαγές της θερμοκρασίας στο χώρο παρατήρησης, οι ατμοσφαιρικές συνθήκες βλέπουμε, δροσιά (είχα κάποτε μια δροσιά C8 επάνω σε μένα και στη συνέχεια η δροσιά μετατραπεί σε πάγο)-ένα δροσιά ασπίδα ήταν σε χρήση εκείνη την εποχή, και αν η δευτερεύουσα είναι η ίδια δευτερεύουσα που χρησιμοποιήθηκε για να λάβει την τελική μορφή στο πρωτεύον κάτοπτρο. Αν ο πρώτος εμφανίζει μια texbook οπτική εικόνα και το seondary δεν είναι τόσο καλή, θα υπάρξουν προβλήματα. Αν θέλει κανείς να παρατηρήσει γαλαξίες, μπορείτε να ξεφύγετε με πολλά και δεν έχουν ως καθρέφτη για να γίνει πολύ απαιτητικό ανοχές. Ένα είναι ενδιαφέρονται μόνο μέχρι το πιπίλισμα το φως. Ένας 6-ιντσών καθρέφτη σας δίνει 28,26 τετραγωνικά εκατοστά της επιφάνειας και ένα 8-ιντσών καθρέφτη θα σας δώσει 50,24 τετραγωνικά εκατοστά της επιφάνειας. Μιλάμε για σχεδόν δύο φορές την επιφάνεια. Είτε έτσι είτε αλλιώς, θα πρέπει να έχετε μια πολύ καλή στιγμή είτε με το πεδίο εφαρμογής. -Φρεντ
  19. Fred Ley

    PGC catalogue

    Hi, You will find the PGC Catalog among the list of catalogs on this site. http://ledas-www.star.le.ac.uk/arnie5/obscatpage.php?obs=galaxy Hope this helps you. -Fred
  20. Wow! I sure wouldn't want to count all the stars in this image. -Fred
  21. Great Image! Yeah! I wouldn't mind living there. Fresh air, no noise (maybe a bear or two), would be nice. -Fred
  22. Fred Ley

    Solar Filters For Sale

    There are now two (2) solar filters left for sale. Thanks, Fred
  23. Fred Ley

    36-inch Dob

    From the album: Personal Gallery Of Fred Ley

    Another view of this 36-inch telescope at the 1998 RTMC. Kodachrome 64 slide.
  24. Fred Ley

    17th Century Telescope 3

    From the album: Personal Gallery Of Fred Ley

    ...and just one more.
  25. Fred Ley

    17th Century Telescope 2

    From the album: Personal Gallery Of Fred Ley

    ...and another image of the instrument.
×
×
  • Δημιουργία νέου...

Σημαντικές πληροφορίες

Όροι χρήσης