Wednesday, 30 July 2025

SH2-129 The Flying Bat nebula in Cepheus.

This image was taken on two separate evenings under clear sky conditions with only light pollution to contend with. I was using a Vixen Atlux mount, a ten inch reflector piggybacking my Atik 383L mono CCD camera with a 135 mm lens attached to it. The filter was placed on the front of the lens using H Alpha, S11, O111 and RGB  filters. I captured two minute sub frames with matching dark frames and combined them with  flat field frames to reduce the effect of noise and vignetting in the final image 

The total exposure time was two hours using a H Alpha filter, Two hours using an O111 filter, 20 minutes using an S11 filter and ten minutes for each RGB filter.

RGB



Narrowband