Test photo NGC281 Pacman #2

 Posted: May 12th, 2025
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Technical Info
Telescope/Lens: Гид ZWO 30mm F/5 APO Guide Scope
Camera: SvBony SV705C
Mount: Svbony SV225 (AZ)
Software: SharpCap, Siril, GraXpert
Accessories: SVBONY IR-UV Cut filter
Exposure:
1391 x 2" ISO/Gain: 400
Red, Bortle 7 zone:
 Novosibirsk, Russia
 May 11th, 2025
46 m
408
Resolution: 1606x1073 px
Scale: 1432 KB
Another test photo with the guider as a telescope, with manual guiding. With the 705 camera, the field of view is much larger than with the 662, so I shot with a 2-second exposure. I did the guiding approximately every 12 minutes - scrolled the entire frame to the left and slightly down. This time, the total integration time is about 50 minutes. Balcony. Bortle 7. Experimented - removed the background and stars, stretched the histogram with inverse hyperbolic transformation, etc.
Updated
  13 Jun, 2025
  8 h 41 m
Stars were taken from 10 sec subs through StarNet. Otherwise, cropping was done, I'll see which framing option is better.
  13 Jun, 2025
  8 h 40 m
Continuing to accumulate Pacman in Ha-OIII. The drizzle 2 option.
  7 Jun, 2025
  11 h 53 m
Put it all together (each stack has its own calibration files). Without star processing.
  7 Jun, 2025
  3 h 0 m
Narrowband filter. Accumulation is more efficient than for the broadband IR-UV CUT filter.
  5 Jun, 2025
  8 h 54 m
Here I added a stack of 180 seconds. I took the stars from the 10-second layer using StarNet. I adjusted the white balance.
  2 Jun, 2025
  7 h 41 m
Same as #7, but accumulated a bit more. No processing in StarNet.
  1 Jun, 2025
  3 h 20 m
The same as the Pacman Nebula NGC281 #6, but processed in Starnet. Removed the stars and restored them, dimming them.
  1 Jun, 2025
  3 h 20 m
I continue to accumulate Pacman. Only 3 hours. Minimal processing, all in Siril (remove background gradient, remove green noise, auto histogram correction, move…
  31 May, 2025
  51 m
Another test FRA300.
  15 May, 2025
  1 h 7 m
The same equipment, ZWO APO 30 F/5 guide on a manual mount. SV705C camera. Gain reduced to 300, exposure 1 sec. Noticeable strong field rotation effect. The neb…
  12 May, 2025
  0
The same as in photo 2, but more stars have been restored.
Current photo
  12 May, 2025
  46 m
Another test photo with the guider as a telescope, with manual guiding. With the 705 camera, the field of view is much larger than with the 662, so I shot with…
  7 May, 2025
  20 m
Test shot with telescope mounted on tripod, no tracking, from balcony in Bortle 7.
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