AstroBin Questions
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Imaging telescopes or lenses: Canon EF 200mm f1.8
Imaging cameras: QHYCCD QHY9 Mono
Mounts: Meade ETX
Software: CCDWare CCDStack, photoshop, Patrick Chevalley's Cartes du Ciel, Maxim DL
Filters: Baader Planetarium SII, Baader Planetarium OIII, Baader Planetarium H-Alpha Filter
Resolution: 1223x1591
Dates: Jan. 30, 2012
Frames: 20x1200"
Integration: 6.7 hours
Avg. Moon age: 6.34 days
Avg. Moon phase: 38.97%
RA center: 00:01:09.274
DEC center: +66:37:02.583
Pixel scale: 12.98 arcsec/pixel
Orientation: 178.74 degrees
Field width: 4.40 degrees
Field height: 5.73 degrees
This cosmic question mark, in constellation Cepheus, contains following objects; At top, Cederblad 214(Ced 214) surrounded by NGC 7822, a dot like nebula at the bottom is known as Sharpless 170,(Sh2-170). Image spans over Five degrees vertically. Distance from my observatory, is ~2750 light years and it spans about 40 light years.
Total exposure time is about 9h with an ultra fast Canon EF 200mm f1.8 optics and the QHY9 astronomical camera.
Technical details:
Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Levels, curves, color and mosaic combine in PS CS3.
Optics, Canon EF 200mm camera lens at f1.8
Camera, QHY9
Guiding, Meade LX200 GPS 12" and a Lodestar guider
Image Scale, ~5,5 arcseconds/pixel
Exposures, Baader 7nm H-a, 13x1200s + 10x900s = 7h
O-III 1h and S-II 1h, total 9 hours.
Calibration with Darks, Flats and Bias frames.
