Wednesday, February 12, 2014

Perseus to Taurus on E200

Perseus to Taurus on E200 by S Migol
Perseus to Taurus on E200, a photo by S Migol on Flickr.
Via Flickr:
A widefield image taken at Calstar 2013. In the frame are the California Nebula and the Pleiades. Also seen crossing the frame are filaments of the molecular cloud in Perseus.

Shot on Kodak Ektachrome 200 120 film with a Pentax 67 camera with the SMC Pentax 6X7 165mm f/2.8 lens at F4. 60 minute exposure pushed one stop in processing. Scanned with Epson V700 and curves in LR5.

It's pretty obvious that shooting this lens at F4 leaves a lot of vignette still visible. I passed the file through LR5 to try to control the edges. Still, the color shift is noticeable at the corners and I've left intact to remind what it can show.

There are some additional strange artifacts that appear across several of the images as horizontal bands. These might be reflected light from car headlights or even light shining off the telescope tube. Or they could be scanning artifacts.