This latest image (part of the set of images of SH2-171) from Grand Mesa Observatory was captured using 2 cameras, the QHY128C for color and the QHY11 for the narrowband (hubble palette) for this setup I’m using twin Takahashi E-180 Astrographs mounted side by side.
I used the stars from the RGB image of the QHY128 CMOS in this HSO (hubble palette) rendering captured using the QHY11. You can also see this latest set of images in a new video on YouTube
www.youtube.com/watch?v=wRAM4JWd9BQ&feature=youtu.beImage capture details
By Terry Hancock
Location: GrandMesaObservatory.com Purdy Mesa, Colorado
QHY128C
Dates: over 2 nights 11th and 15th October 2018
Color 186 min, 93 x 120 sec
Camera: QHY128C
Offset 60, Gain 2200 Calibrated with flat, Dark & Bias
Optics: Takahashi E-180 F2.8 Astrograph
Mount: Paramount GT1100S
Image Acquisition software Maxim DL5
Pre Processed using Pixinsight
Pro Processed using Photoshop CC
QHY11
Image capture details
By Terry Hancock
Location: GrandMesaObservatory.com Purdy Mesa, Colorado
Dates: over 4 nights, Oct 16, 6, 11 and 14th Nov 2018
H-Alpha 150 min, 15 x 600 sec
OIII 150 min, 15 x 600 sec
SII 150 min, 15 x 600 sec
Camera: QHY11 Mono CCD
Offset 157, Gain 5 Calibrated with Dark & Bias
Optics: Takahashi E-180 F2.8 Astrograph
Mount: Paramount GT1100S
Image Acquisition software Maxim DL5
Pre Processed using Pixinsight
Post Processed using Photoshop CC
Encompassing the emission region designated Sharpless 171 is the star forming complex NGC7822 a spectacular example of a stellar nursery. The emission nebula shines as a result of the ionizing radiation from one of the hottest stars known; BD+66, which has a luminosity 100,000 times that of our sun. Curiously enough, BD+66 is also an eclipsing binary, which means that it is actually two stars in orbiting each other and are aligned in such a way that one star occasionally eclipses the other from our perspective, is a very young star forming region; no more than a few million years old. It will continue birthing new stars for several million more years until the radiation from the new stars blows away the last remnants of hydrogen gas, leaving behind a small cluster of young bright stars.
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