туманности

In late July, I managed to leave for the dark sky in the area of the village of Varenikovskaya. The sky there is really good at its zenith, but from the south there was a noticeable orange flare. I could not resist and again shot a number of hydrogen nebulae – M 16, M 17 and Barnard 312. With auto guide and shutter speeds of 2 minutes, there were practically no defective frames.

M 16

M 16 “Eagle nebula”, M 17 “Omega”. July 27, 2019.

Equipment:
-lens Samyang 135\2.0 ED Canon EF
-camera Canon 550Da
-filter Optolong L-Pro clip
-mount Sky-Watcher Adventurer
31 frames per 102s, ISO 800.
Calibration and stackieng with DeepSkyStacker. Scale 37%.
Fullsize.
Another bright version

Location: Russia, village Varenikovskaya, Kuban.

Single image without processing.

Last night, I tested the newly purchased ZWO ASI183MC astro camera through the sky. As the object of testing, I chose the region of the nebulae M 8 and M 20. The sky was clear, but strong winds and abnormally low temperatures limited the duration of the trip out of town. Nevertheless, in 41 minutes of shooting, I managed to collect enough material to obtain a completely adequate result. As an light pollution filter, I used Baader Neodymium IR-cut. The camera is very sensitive, the signal is perfectly pulled. Shooting was performed in Firecapture, calibration in PIPP, stacking in DeepSkyStacker. The impressions of the camera are purely positive, but the Samyang 135\2.0 ED lens did not expect to draw such a small pixel. You must either aperture the lens to f\2.8, or use a sharper lens. Autoguiding with a QHY5III178m camera worked well – out of 41 frames per minute, only a few turned out to be a bit with a shift.

M 8 “Lagoon” and M 20 “Trifid” nebulae, August 1, 2019

M 8 “Lagoon” and M 20 “Trifid” nebulae, August 1, 2019

Equipment:
-Samyang 135\2.0 ED lens
-Baader Neodymium IR-cut 1.25″ filter
-ZWO ASI183MC camera
-guider Deepsky 50 мм + QHY5III178m
-mount Sky-Watcher Adventurer.
41 frames per 60s. Calibration with PIPP, stacking with DeepSkyStacker.
Scale 25%. At 50% scale – link.
Location: Russia, villageSupseh.

A couple of days ago, I went to work in Abrau-Durso, took with him a mini-astrograph. The main task was to shoot the nebulae in Scorpio, but I could not resist and decided to shoot my favorite nebulae in Sagittarius – M 8 and M 20. Local light pollution interfered noticeably, but closer to one in the morning some of the lanterns were turned off. The sky was noticeably better than Supsekh, but the filter Optolong L-Pro is still useful and now it will be in the camera all the time. With the white balance did not arise.
M 8

M 8 “Lagoon” and M 20 “Trifid” nebulae, June 9, 2019.

Equipment:
-Samyang 135\2.0 ED Canon EF lens
-filter Optolong L-Pro
-Canon 550Da
-mount Sky-Watcher Adventurer
23 frames per 60 s, ISO 1600.
Processing: calibration and stacking withDeepSkyStacker, post-processing with Fitswork, noise reduction with PixInsight LE.
At scale 100% — at link.
Location: Russia, Abrau-Durso.

Interestingly, almost a year ago I shot the same area, but without a filter and with a lower ISO (400).