North Bear Nebula (ic 1795) Close Up In Hst Palette

Telescope: APM Astrograph 107, f/6.5 with Baader Steeltrack Focuser and 2.5'' TS FF

Mount: NEQ6 Pro with EQ Mod and XBOX Wireless Controller

Camera: ATIK 314L+

Image Scale: 1.91 arcsec/pixel

Filter: Baader Ha 7nm, OIII 8.5nm, SII 8nm, IDAS LPS

Filter Wheel: Starlight Xpress Motor USB Filter Wheel, 7x1.25''

Guide Camera: QHY5 with PHD Guiding and TS UV/IR Block

Guide Scope: Skywatcher Finderscope 8x50

Exp. Time: Ha: 2h (bin 1x1), OIII, SII: 56, 56 min (bin 2x2)

Calibration Frames: 50 flats in each filter, 50 bias, 6 dark frames

Capture: Nebulosity 2.3.0

Register, Stack: Maxim DL, CCD Stack

Processing: Photoshop CS3

Date: 5 Nov & 7 Dec 2010

Location: Athens

http://astrophotographia.blogspot.com/

Η πρώτη μου προσπάθεια narrowband. Χρησιμοποίησα το Ha που είχα τραβήξει το Νοέμβρη.

Λόγω μετατόπισης της κάμερας, αναγκάστηκα να κάνω crop και να χάσω αρκετό πεδίο.