Imaging telescopes or lenses: Teleskop-Service ONTC 8" f4
Imaging cameras: ZWO ASI1600MM-Cool
Mounts: Astro-Physics Mach1GTO
Software: PixInsight · Maxim DL
Filters: Baader H-alpha 7nm
Accessory: Skywatcher Coma corrector
Dates:Oct. 4, 2016
Frames: 100x15"
Integration: 0.4 hours
Avg. Moon age: 3.15 days
Avg. Moon phase: 10.83%
Astrometry.net job: 1267502
RA center: 19h 59' 35"
DEC center: +22° 43' 22"
Pixel scale: 0.982 arcsec/pixel
Orientation: -91.071 degrees
Field radius: 0.265 degrees
Resolution: 1552x1174
Data source: Backyard
I received my 8 inch f/4 ONTC telescope from Telescope Service in Germany this week - it is a beautiful scope!
This is a first light using an ASI1600MM-Cool camera and a Baader 7nm H-alpha filter. I wasn't guiding so I used 15 second exposures and gain=225.
The first revision is a stack of 100 x 15s frames using the full frame.
The second revision is a stack of 300 x 15s frames using a ROI around M27 to reduce the disk space and computing time needed to process the frames. The calibration frames worked perfected on the ROI so this is a technique I'll use for smaller objects in the future.
Overall for a first engineering test of this scope I'm very pleased.
| Cloudy Nights |
| ZWO ASI1600MM/QHY163M |
| Narrowband imaging |
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