ARCHIVE August2006
Deep Sky / Gear / Long Exposure Photography
M20, The Trifid Nebula in Sagittarius
I am continually amazed at how much data the modified camera is picking up down in the light polluted muck near the horizon. The weird “box” artifact is from the application that […]
Deep Sky / Gear / Long Exposure Photography
NGC 6888, The Crescent Nebula in Cygnus
This is my first attempt at the Crescent Nebula. I was surprised at how well it showed up in the final image. Lots of tendrils.
Deep Sky / Gear / Long Exposure Photography
M27, The Dumbbell Nebula in Vulpecula
This is some more testing with the newly-modded D70. 30 seconds has a lot of detail, but 2 minutes grabs even more.
Deep Sky / Gear / Long Exposure Photography
NGC 6960, The Witch’s Broom, part of the Veil Nebula in Cygnus
NGC6960, The Western Veil Nebula, Supernova Remnant in Cygnus The Veil Nebula is one of my deepsky nemeses; it’s big (over 3° across if you get the whole thing at once), it’s […]
Deep Sky / Gear / Long Exposure Photography
M13, Globular Cluster in Hercules
M13, Globular Cluster in Hercules This is a fairly large stack (70 2-minute images), all taken unguided from my new G-11 mount. The mount is really a big improvement over the CG-5GT. […]
Re: Latest from Ad Astra Observatory at Newark
Man, I don’t care what anybody says, you do *good* work. Uh, does stacked mean multiple exposures digitally stacked into one image? Or are you using multiple film slides? The hell kinda […]
filter drawer
http://www.astrovid.com/prod_details.php?pid=395&querystr=astronomik
Astro knowledge / Long Exposure Photography
spectral lines
…unless using a pretty narrowband Ha filter, Ha and SII are basically the same (656 vs 671). OIII should be the next filter to get. http://www.narrowbandimaging.com/images/crab_composite_hd.jpg
Deep Sky / Gear / Long Exposure Photography
M27, The Dumbbell Nebula in Vulpecula, composite
This is a stack of the previous 2 images of M27. The 5 minute image had nice blue nebulosity, and the 30sec images had some highly textured red, so I decided to […]
RECENT UPDATE
Polar Alignment Calculations
Here’s a page that derives Polar Alignment Calculations. (update 5/2020: the original site is gone, so I found the text on Wayback and am inserting it below. This is by the original […]
Gear / Observatory / Telescope
Special Guest Star takes the mount at Hilltop O
The Astro Jedi needed somewhere to store his light sab—- I mean, bucket, and I was only too happy to accommodate him. I have decided that I need to come to a […]
General / Maintenance / Observatory
Dome shutter is motorized again!
I finally decided to bite the bullet and fix the shutter motor. Things went sideways last winter, and I’ve been opening the shutter manually (and tying it shut with rope, so we […]
Trixie 2017 – tube mods
I finally got around to cutting the MTA-UTA tubes to length; the only eyepiece that would come to focus with the focuser spacer in place is the Televue 55mm Plossl. If I […]
MOST COMMENTED
Observatory
Observatory 2.0 – Time has come today!
General / Maintenance
First Light, a deeper look
Mount / Observatory / Telescope
Observatory 2.0 – Result!
Observatory
Observatory 2.0 – The Pier goes in
Gear / General / Maintenance
Martin Farmer Wormblock installation notes
Deep Sky / Long Exposure Photography
NGC2244, The Rosette Nebula
Deep Sky / Long Exposure Photography
Another beautiful night.