Celestial hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  Great Cluster in Hercules  ·  M 13  ·  NGC 6205
Messier 13 (Crop) Optictest after mirrorcleaning, flocking and collimation, Anton Karl Seewald-Czeczelich
Messier 13 (Crop) Optictest after mirrorcleaning, flocking and collimation
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Messier 13 (Crop) Optictest after mirrorcleaning, flocking and collimation

Messier 13 (Crop) Optictest after mirrorcleaning, flocking and collimation, Anton Karl Seewald-Czeczelich
Messier 13 (Crop) Optictest after mirrorcleaning, flocking and collimation
Powered byPixInsight

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

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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

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Messier 13 (Crop) Optictest after mirrorcleaning, flocking and collimation, Anton Karl Seewald-Czeczelich