Cookie consent

AstroBin saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing AstroBin without changing the browser settings, you grant us permission to store that information on your device.

I agree
Contains:  Solar system body or event

First Light of a New Solarscope: AR 2765

Technical card

Date:June 14, 2020

Time: 07:30

Frames: 600

FPS: 34.00000

Focal length: 1300

Seeing: 3

Transparency: 8

Resolution: 1093x905

Locations: Rahva Observatoorium, Munalaskme, Estonia

Data source: Backyard


After about 10-years delay, I decided to recommence H-alpha solar imaging. For that purpose, I assembled a modified Coronado PST telescope, coupled with a TS 102 f/7 refractor. The modification was made with an aid of a specially designed afocal corrector lens ("Gomal") installed in front of the Coronado objective. The purpose of the corrector is to converst the incoming light into a parallel beam before it enters the Coronado. The system was introduced and popularized by Russian astrophotographer Alexey Prudnikov. "Gomal" correctors were custom-produced in small amount at the NPZ optical plant in Novosibirsk. I am happy to own one of these rare optical gatgets. About 10 years ago, I used Coronado PST coupled with a 80 mm f/7 refractor, and was really impressed with the system performance. Upgrade to a 100 mm Solarscope afforded even more impressive visual views, along with marvellous photo-quality.

Here is a first-light picture, showing subsiding active region 2765 close to the solar limb on the morning, 14 July 2020 (7:30 UT). The raw video was taken during my visit to Estonian People's Observatory (Munalaskme, Estonia).

Processing details: 16-bit raw video, stacked in AS!3 (600 of 3000 frames), deconvolved in AstraImage. Inverted pseudocolor version. Image B: pseudocolor version.



Dzmitry Kananovich
License: None (All rights reserved)



Description: Pseudocolor


First Light of a New Solarscope: AR 2765, 


            Dzmitry Kananovich

Made possible by