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Re: [APML] Hovenweep Adventure
John,
Both shots are fantastic! Could this V-shape nebulaes be the darn neb. LDN 1622 and the reflection neb. vdB 62 ??? Whatever it is
.. congratulation for the very nice result!
Drk
LDN 1622
Constellation: Orion
Dimension: 15.0'x 15.0'
Description: Near reflection nebula vdB 62
J2000 RA: 5h54m36.00s DE:+02°00'00.0"
Date RA: 5h54m48.84s DE:+02°00'01.9"
----- Original Message -----
From: Jon Kolb
To: 'Discussion of Film Astrophotography'
Sent: Tuesday, February 10, 2004 10:15 PM
Subject: [APML] Hovenweep Adventure
As you know from my recent dark site report, I took my gear to Hovenweep National Monument in Utah last new moon. Here are two
images from that trip, both taken with Pentax 67 cameras and the TMB152 refractor at f/7.9. As always, your comments and
suggestions are welcome.
This shot was difficult to process for some reason, and may need more work. It's the northern part of Barnard's loop, along with M78
and some of the pervasive faint nebulosity in the region. The reflection nebula reported by Marco is visible in the lower right of
the image. The V-shaped nebulosity in the upper left, which also appears to have a small reflection component around the star at
its apex, is not identified in either Sky Atlas 2000 or Uranometria 2000.0. Does anyone have a designation for this nebulosity? I
think E200 did pretty good on M78, but unfortunately the seeing was going downhill by the time I got to this target that night. The
exposure was 75 minutes, pushed one stop.
http://home.datawest.net/jkolb/m78+barnards_TMB152.htm
I've always wanted to shoot this pair of clusters, but it's low in the sky and is visible at the time of year when weather can be a
problem around here. Luckily, I caught it at a good time this year, and shot it during some of the best seeing of the night. This
one was shot on Provia 400F, which I think did a pretty good job on the star colors. 60 minutes, pushed one stop.
http://home.datawest.net/jkolb/M46+M47_TMB152.htm
Both images were cropped somewhat to improve the composition and to eliminate a bit of vignetting. The Barnard's shot is was not
composed exactly as I'd wished, so it is actually not cropped very much, and the vignetting is fairly evident in the corners on the
right side. I'm also still working on an E200/400F composite of IC443 that I hope to post soon. This month I expect to meet up
with APML'er Glenn Shaw at Chiricahua.
Sincerely,
Jon Kolb
Adventures in Astrophotography
http://home.datawest.net/jkolb/
Life Member, International Dark-Sky Association
jkolb@datawest.net
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