Moon | September 2021

After having recently modified my telescope by installing a DIY 0.63x focal reducer, which involves cutting the optical tube assembly and reattaching the focuser, I took a test shot with the moon to determine if the optical elements are properly aligned (collimated) and whether or not the reducer lens introduces color (chromatic) aberration. The image appears sharp, and I did not notice any chromatic aberration (no chromatic aberration reduction applied on this image, not even RGB alignment). To further check proper collimation, I will need to perform a star test soon.

Moon | September 2021

For a complete list of astrophoto images, click here.

Night Sky in Focus | Astronomy and Amateur Radio
© Anthony Urbano | Manila, Philippines

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Eteny

du1au@nightskyinfocus.com

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