Deep Sky / Long Exposure Photography

birthday images – my greatest hits

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My wife said she wanted to get me some of my photos printed and framed for me. So it was an opportunity for me to cull out some of my “greatest hits” […]

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Astro knowledge / Long Exposure Photography / Optics

Astrophotography: The "best" focal length

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Astrophotography has a lot of legends and rumors floating around as regards focal length of scope. Since the focal length of the scope, size of the CCD, weight of the rig, and […]

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Deep Sky / Gear / Long Exposure Photography / Optics

MPCC and coma correction

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The MPCC is up there with the ST-4 as one of my Best. Astronomy. Purchases. Ever. My 8” f/5 Newt was almost worthless for DSLR photography before I added the MPCC. Now, […]

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Astro knowledge / Deep Sky / Long Exposure Photography / Optics

Astrophotography in the slow lane

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With most beginner astrophotography, a desire for fast optics (and the resulting short exposure lengths) is paramount. Unfortunately, fast optics necessarily mean wider FOV. This is not a problem when you have […]

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Deep Sky / Gear / Long Exposure Photography

M104, The Sombrero Galaxy in Virgo

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Finally! A Virgo galaxy. I’ve had some kind of mental block about shooting in Virgo, so I finally forced myself to shoot down here. M104 is on the edge of being too […]

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Deep Sky / Gear / Long Exposure Photography

M81, Spiral Galaxy in Ursa Major

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Like M42 is a “tester” object for winter, M81 is a tester object for the spring. It’s big and bright and there’s lots of detail to bring up. In addition, if well-framed, […]

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Deep Sky / Gear / Long Exposure Photography

M82, Spiral Galaxy in Ursa Major

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This is a “freebie” version of M82. It was way off in the badly vignetted border of the above M81 images (M81 was centered). But once I applied flat frames to the […]

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Astro knowledge / Deep Sky / Gear / Long Exposure Photography / Maintenance

A tale of two images

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This is a tale of two images. These were taken on successive nights. Same setup, same exposure time, everything. The first night was unguided. … and the second night was autoguided with […]

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Deep Sky / Gear / Long Exposure Photography

M64, The Black Eye Galaxy in Canes Venatici

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After 4 overseas trips in 4 months, I finally had some time to really get some time under the stars and get back to the “spring” galaxies that I’d raced to catch […]

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Deep Sky / Gear / Long Exposure Photography

NGC 2174, Emission Nebula in Orion

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One of those objects that just doesn’t get much press. This is a huge nebula, the size of M42, and well-placed in the sky, between the foot of Gemini and the head […]

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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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