Orion

 

Technical Data
Optics

Pentax 105SDHF refractor (D=105mm, F6.7)
0.77x focal reducer (F5.1)
Camera Pentax 67
Tracking Takahashi NJP mount, 6cm/F12 guide scope, manual guiding
Film

Kodak E100S +1 push
Time 2003/12/18 - 2004/12/13, 7 nights total
90 minute exposure x22
Location Mauna Kea, ~3500m, 4100m
Note


This is a mosaic picture of 18 (6x3) frames. Additional four frames are added around the Barnard Loop region to increase S/N. Vignetting of the telescope is corrected by flat fielding, using my own program written in IDL. Distortion correction and initial color match is done in Registar. Final color correction and mosaic is done in PhotoShop.

2005/04, Temmon Guide magazine (Japanese) "Best Picture of the Month Award"

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