The Sun in CaK and OIII feb 5, 2022

Pictures of the Sun on Feb 5, 2022 both in OIII as in CaK.

Setting : Nikon D7500 & TAL200K f/8.5 Filter ND3.8 and OIII. Editing using CS4 and P, B0 set with Helioviewer.

Central sunspot AR2939 was special as a Faint Light Bridge (FLB) was observed.

Setting : ASI224MC with TAL200K f/8.5 and Filter ND3.8 and CaK. Stacking using AutoStakkert! and final editing with CS4. 

Faint Light Bridge on Sunspot AR2939

 

Sunspot AR2939 was observed on Feb 5, 2022 using a solarfilter ND3.8 and OIII filter with Nikon D7500 and TAL200K f/8.5. The picture is cropped and show the sunspot together with pores and the faint light bridge inside the umbra. This is the first time I made this observation. 

Positional Astronomy by Prof Claude Doom

Attending the first (1/5) lesson of the positional astronomy course provided by Prof. Claude Doom. At the end of this training I should be able to calculate the location of the sun, moon, planets, satellites aswell as eclipses and occultations. 

Venus 19% illuminated

A bright Venus 90 minutes before sunrise. Venus is currently 19% illuminated. 

 

MAI SSTV Experiment on Feb 7 & 8

The Moscow Aviation Institute (MAI) is organizing a SSTV experiment on February 7 and 8. According information the SSTV images are sent with about 3 minute gaps between transmissions.

Feb. 7 - Start about 08:35 UT, stopping about 15:05 UT.
Feb. 8 - Start about 10:40 UT, stopping about 14:30 UT

See also previous experiment by MAI via this link.

Sunspot AR2936

The largest sunspot (AR2936) so far of this new solar cycle #25. Picture taken with ASI224MC and TAL200K f/8.5 with solarfilter ND5.0. Stacking using AutoStakkert! and final editing with CS4.

NGC 3718, NGC 3729 and Hickson #56

As part of Herschel 400 I made pictures of NGC3718 and it's compagnon NGC3729. NGC3718 (also known as Arp 214) is located in constellation Ursa Major and is about 52 million ly away from Earth. NGC 3729 is interacting with NGC 3718 on a distance of about 150.000 ly.

Next to NGC3718 a group of galaxies is visible. This is Hickson Compact Group (HCG) number 56 counting 5 galaxies. The Hickson Compact Group was published in 1982 by Paul Hickson. A well knows HCG is number 92 known as Stephan's Quintet.  See observation via this link. 

Setting:

TAL200K f/8.5 with ASI2600MC, lights 5x90s, darks, bias, flats and darkflats, no PHD2 guiding. N.I.N.A. was used to support the proces, stacking using APP and final editing with CS4 and DeNoise AI.