Photos, sketches and other images by SPA members
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24 X 5 min exposures acquired on the evening of March 9th through a 400mm f6 Vixen guidescope, using an SXV-H9 fitted with a H-alpha filter. PEC was applied but the exposures were otherwise unguided, the untrailed star images being a testament to the tracking accuracy of Vixen's GPDX mount. The exposures were stacked and flat-fielded in AIP4Win, then contrast adjusted. No dark frames were taken or required. Final processing in Paint Shop Pro 7 yielded the accompanying image of this well-known supernova remnant in Gemini.
The JPEG compression has been slightly unkind to the detail in the image, which was otherwise reasonable given the small aperture of the scope used. The bright star at the right is Eta Geminorium.