Test photo NGC281 Pacman #4

Jun 13th, 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.

Jun 13th, 2025

8 h 40 m

Continuing to accumulate Pacman in Ha-OIII. The drizzle 2 option.

Jun 7th, 2025

11 h 53 m

Put it all together (each stack has its own calibration files). Without star processing.

Jun 7th, 2025

3 h 0 m

Narrowband filter. Accumulation is more efficient than for the broadband IR-UV CUT filter.

Jun 5th, 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.

Jun 2nd, 2025

7 h 41 m

Same as #7, but accumulated a bit more. No processing in StarNet.

Jun 1st, 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.

Jun 1st, 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 black point to 0.05). What is noticeable: 1) Stars are not burning out, but there are too many of them, will have to remove or shoot a star layer with shorter exposure. 2) Degraded zones are noticeable on the sides due to dithering. They will need to be removed. 3) The lower left corner is heavily overexposed or otherwise vignetted. At the same time, I performed background gradient removal for both single frames and the result. 4) Color is not calibrated, as is.

May 31st, 2025

51 m

Another test FRA300.

May 15th, 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 nebula came out better, but the stars didn't turn out. Some kind of smearing.

May 12th, 2025

The same as in photo 2, but more stars have been restored.

May 12th, 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 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.

May 7th, 2025

20 m

Test shot with telescope mounted on tripod, no tracking, from balcony in Bortle 7.