Deep Sky / Gear / Long Exposure Photography

NGC 2237, The Rosette Nebula in Monoceros

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An example of serendipity. I was trying to find this nebula, was using GOTO (on the CG-5GT), couldn’t be sure I had it, so I only shot one frame of it. Turns […]

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Deep Sky / Long Exposure Photography

M81 and M82, Spiral Galaxies in Ursa Major

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Another try at this pair. Starting to get some detail on the spiral arms on M81. More magnification wouldn’t hurt; I have plenty of FOV to spare (this was cropped by about […]

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Deep Sky / Gear / Long Exposure Photography

M42, The Great Orion Nebula

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Never thought it would take this long to get back to M42… This was my original attempt, a stack of ten 2min subframes. Here’s the image with some more data added (details […]

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Deep Sky / Long Exposure Photography

M81 and M82, Spiral Galaxies in Ursa Major

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M81 and M82, Galaxies in Ursa Major Edge-on galaxy (Cigar-shaped) M82 and neighbor M81. First shots in awhile. Got some good weather all the way through December and into January, finally took […]

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Deep Sky / Gear / Long Exposure Photography

M20, The Trifid Nebula in Sagittarius

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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 […]

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Deep Sky / Gear / Long Exposure Photography

NGC 6888, The Crescent Nebula in Cygnus

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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.

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Deep Sky / Gear / Long Exposure Photography

M27, The Dumbbell Nebula in Vulpecula

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This is some more testing with the newly-modded D70. 30 seconds has a lot of detail, but 2 minutes grabs even more.

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Deep Sky / Gear / Long Exposure Photography

NGC 6960, The Witch’s Broom, part of the Veil Nebula in Cygnus

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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 […]

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Deep Sky / Gear / Long Exposure Photography

M27, The Dumbbell Nebula in Vulpecula, composite

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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 […]

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Deep Sky / Gear / Long Exposure Photography

M27, The Dumbbell Nebula in Vulpecula

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This is the first shot after I performed the UV/IR filter removal on the D70. Note that these images are 30 seconds long, 10 times shorter exposure than the image taken two […]

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Techniques

Polar Alignment Calculations

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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 […]

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Gear / Observatory / Telescope

Special Guest Star takes the mount at Hilltop O

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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 […]

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General / Maintenance / Observatory

Dome shutter is motorized again!

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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 […]

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ATM

Trixie 2017 – tube mods

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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 […]

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