This image of VDB 141 was taken under moonlight with very clear sky conditions. It lies in the constellation of Cepheus near the Iris nebula. I was using my 80mm, f/6.3 refractor, a Vixen Atlux mount, PHD auto-guiding, an Atik 383L mono CCD camera and a set of Astronomic narrowband filters, H-alpha, SII and OIII.
I capture five minute sub frames with matching dark frames and combined them with flat fields to reduce the effect of vignetting in the final image.
The total exposure times were 90 minutes using a H-alpha filter, 40 minutes using an OIII filter, 35 minutes using a SII filter and 20 minutes using a blue filter.
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VDB 141
A two section mosaic
