h-alpha

Sun in h-alpha line. 2019-01-09, 13:37

Солнце в линии водорода. 9 января 2019 года, 13:37

Sun in h-alpha line. 2019-01-09, 13:37

Equipment:
-telescope Coronado PST H-alpha 40 mm
-mount Sky-Watcher Adventurer
-filter Deepsky IR-cut
-camera QHY5III178m.
Stacking 1000 frames from 2966, movie 60s (50 fps).
Location: Russia, Anapa, backyard.

My first shot of the Sun in the new 2019. The chromosphere is fairly calm, but there are several large prominences. Shooting was slightly disturbed by the dust in front of the matrix, I decided to unscrew the Ir-cut filter and was surprised to find that the brightness rose noticeably, as well as other dust particles appeared. The conclusion is strange – Coronado “flows” at IR. This feature requires more careful research. For the rest – no surprises, the camera still gives out a striped pattern, which was eliminated by the settings of the wavelets in Registax. I tried to shoot with Sky-Watcher Adventurer mount, approximately setup the polar axis. It is quite possible to shoot, only inconvenient without the remote.

Водородные туманности возле звезды Денеб, 6 ноября 2018 года

Hydrogen nebulas nearly Deneb, 2018-11-06

Equipment:
-lens Samyang 135\2.0 ED Canon EF
-camera Canon 550Da
-filter Svbony CLS clip EOS-C
-mount Sky-Watcher Adventurer
42 frames per 60s, ISO 800.
Calibration and stacking at DeepSkyStacker.
Scale: 25%. At link – 50%.
Location: Russia, Anapa, backyard.

This capturing was carried out purely for the sake of testing the filter Svbony CLS – it was interesting how this filter can improve the selection of nebulae from the background of the city illumination. The filter works quite well, however, when shooting with a Samyang 135\2.0 ED lens, there are noticeable red halos. The filter itself has a noticeable gap between the red and green rays. In addition, the camera with the removed “blue glass”, so the halos are more noticeable than on the camera without modification. We have to pay particular attention to the red channel during processing. On a mirror optics, as well as lenses with good chromatic correction, such halos should not arise.

Single frame example:

 

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Orion Nebula, 2018-12-09

Туманность Ориона, 9 декабря 2018 года

Orion Nebula, 2018-12-09

Equipment:
-telescope Sky-Watcher BKP2001
-mount Sky-Watcher EQ6 SynScan Go-To
-coma corrector Baader MPCC
-filter Optolong H-alpha 12 nm
-camera QHY5III178m.
-guider-finderscope 50 mm + camera ZWO 290 MC.
905 frames per 1s.
Calibration at DeepSkyStacker, stacking at Autostakkert, deconvoluton at ImPPG.
Place: Russia, Anapa, backyard.
Scale 50%. At 100% scale – link.

I visited my astronomical friends and took a little shot of the Orion Nebula. I finally took off from a normal telescope, not a photo lens, but I got some troubles in processing. First, with the addition of black spots on the image. The shooting took about 40 minutes (2143 frames), of which 905 best frames were added. 1,200 dark frames were captured. Shooting was guided, but without dithering. It is possible that the lack of dithering and caused the appearance of black spots. There is also an idea that calibration problems appeared due to instability of the camera temperature.
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