TAG Autoguider
G-11 Periodic Error analysis
I saved off one of my larger tracking logs last night, and decided to analyze it for Periodic Error in the mount. To help the data, I downloaded PECPrep from SourceForge. After […]
G-11 Guiding Commands: ST-4 relays vs. ASCOM
My autoguiding isn’t as straightforward as it used to be. I have a lot of new gear that I’m trying to figure out; G-11, Gemini, ASCOM, ST-4, MaxIM. Each of these adds […]
Deep Sky / Long Exposure Photography
A couple of new shots near the Celestial Equator
Got a rare clear night. It’s only been clear about 3 times since Valentine’s Day this year. I decided to force myself to shoot some galaxies in Leo. To follow up the […]
Re: Yes you are crazy
Art Morton wrote: > I do not have data to forward, but what I remember is +- 0.00 to > 0.04~0.15 on each axis. I’m averaging more in the 0.2-0.8 range (I’m […]
Focuser / Maintenance / Optics
Re: scope getting dialed in
Art Morton wrote: > With a couple more moon nights you will have a perfectly calibrated G-11 I hope so; It really is a lot of new stuff to learn. Someday I’m […]
Maintenance / Observing Reports / Optics
Re: RA driftage
Art Morton wrote: > All three of these images are fantastic and show that you are tuning > in. In either case here, your optics are quite good. The stars are > […]
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Re: PEC
Art Morton wrote: > At some point you do want to get the PEC programmed and running. Do you use PEC? > I presume this will be the next step after 5min […]
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Re: Well, what happen?
A, Meridian flips don’t work on my mount. The RA motor lags by several degrees in clockwise (RA+) on every slew. I tested to see if the error got larger when jumping […]
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Re: Fwd: [vc200l] Best FWHM with VC200L
Art Morton wrote: > J, > > You have this issue. Maybe this is the nature of the beast. I have > sent you my FWHM and they seem to approach the […]
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 […]
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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.