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:  M 13, Great Cluster in Hercules, NGC 6205
Getting plate-solving status, please wait...
Messier 13 (Crop) Optictest after mirrorcleaning, flocking and collimation, 





    
        

            Anton Karl Seewal...
Messier 13 (Crop) Optictest after mirrorcleaning, flocking and collimation

Messier 13 (Crop) Optictest after mirrorcleaning, flocking and collimation

Technical card

Resolution: 1316x851

Frames: 14x120" ISO400

Integration: 0.5 hours

Darks: ~40

Bias: ~25

Temperature: 15.00

Astrometry.net job: 1230884

RA center: 250.381 degrees

DEC center: 36.411 degrees

Pixel scale: 3.422 arcsec/pixel

Orientation: -136.917 degrees

Field radius: 0.745 degrees

Locations: Feldsternwarte WN-LW, Wiener Neustadt, Niederösterreich, Austria

Description

I disassemble all parts from my telescope, and flocking it from inside with light absorbing material. The idea behind flocking is to increase light absorbing properties of the inner surfaces of OTA by covering it with a special material. It allows absorbtion of the unwanted light, rather than reflecting it. In practice, in unbaffled tube, some stray light will always get to the eyepiece, but flocking can minimize the harm.

For details: http://www.seewald-czeczelich.at/startroopers/?page_id=492

Comments

Author

Reverend.Antun
Anton Karl Seewal...
License: None (All rights reserved)
1750
Like

Sky plot

Sky plot

Histogram

Messier 13 (Crop) Optictest after mirrorcleaning, flocking and collimation, 





    
        

            Anton Karl Seewal...