TAG C9.25
Astro knowledge / Observing Reports
Re: C9.25 first light
A, Once and for all, we are talking about two *different* parts of the sky. You are referring to: The Trapezium, Theta Orionis RA: 5h 35m 17s Dec: -5 23′ 27” http://www.astropix.com/HTML/B_WINTER/TRAPEZ.HTM […]
Re: C9.25 first light
Finder alignment is always a little tricky the first time out. Luckily, I can see M42 in the eyepiece. Or through the camera’s viewfinder, for that matter. I was all pleased with […]
Re: C9.25 first light
I was a little worried about the weight of the new (and larger-aperture) OTA, but since it was a first light, I was running in minimal load mode; just the OTA, a […]
Re: ASTROMART – Response to ad #605811
I got the C9.25 out under the stars last night. Nice optics! I like the tape marks on the dovetail, helped to get it balanced quickly.
C9.25 first light
I first lighted thenew C9.25 last night. Optics seem pretty good. Stars seem decently sharp across the field of an eyepiece (I needed to align the finder, so I needed to use […]
Whence C9.25?
I decided to upgrade the C-8 to a C9.25. As a photographer, I need different lenses to do different work. The 8” is awesome down to ~10′, but below that, it’s pretty […]
He hasn't marked it "Pending" yet, but
http://www.astromart.com/classifieds/details.asp?classified_id=605811 is my new scope. I got the go-ahead for an IOU from SWMBO, selling the C-8 and the DSI and the broken 300D should cover most of it. I have been […]
Astro knowledge / Deep Sky / Long Exposure Photography / Optics
Astrophotography in the slow lane
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 […]
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.