Iris Nebula - Ngc7023 - Caldwell4

Iris Nebula - Ngc7023 - Caldwell4

The Iris Nebula, also NGC 7023 and Caldwell 4, is a bright reflection nebula and Caldwell object in the constellation Cepheus. NGC 7023 is actually the cluster within the nebula, LBN 487, and the nebula is lit by a magnitude +7 star, SAO 19158.[1] It shines at magnitude +6.8. It is located near the Mira-type variable star T Cephei, and near the bright magnitude +3.23 variable star Beta Cephei (Alphirk). It lies 1,300 light-years away and is six light-years across

Παλαιότερη φωτογραφία με λίγο καλύτερη επεξεργασία

Τηλεσκόπιο: Takahashi APO TOA130 1000mm f/7.7

Στήριξη: Takahashi Em200-Temma2, Thesky6

Κάμερα: Canon eos 400D mod

Οδήγηση: SW ED80, Qhy5, Phd

Λήψεις/Εκθέσεις: 7X600sec 7X300sec 7X900sec 7X1200sec Iso800

Επεξεργασία: Deepskystacker, Photoshop