ARCHIVE June2007
Filter selector for Field-flattener/DSLR
Morning Jimbo, Are you suggesting this in place of the LF5055? (ie a single-filter solution) No. Or are you suggesting use the LF5055, then screw the LC5348 into the…2″ nosepiece of LF5055… […]
10" tube rings
Hi Diana, I was just contemplating building out my 8” f/6 mirror into the Sonotube, and remembered that I’d need some rings for it. So I went to Orion’s site… they don’t […]
stepper (more)
http://www.tigoe.net/pcomp/code/archives/picbasic_pro/000245.shtml http://www.sparkfun.com/commerce/product_info.php?products_id=8368 http://arduino.cc/ http://jeff.medkeff.com/robotics/hardware/focuser.html not strictly stepper: http://www.makezine.com/blog/archive/diy_projects/62.html and http://www.instructables.com/id/EVIV78PF1B3RH1U/
Blog / Deep Sky / Long Exposure Photography / Observing Reports
rework of the astro page, also new photos, and go look at the moon
Hi, I think that we can all agree that the “Deep Sky Astrophotography” page on the website was getting pretty ponderous — even with a fast ‘net connection, it was taking me […]
Deep Sky / Gear / Long Exposure Photography
M94, Spiral Galaxy in Canes Venatici
Trying to round out the largest Messier galaxies. M94 has a surprisingly large footprint for a galaxy that doesn’t otherwise get much press. Very bright core, *very* dim outer arms. Despite 2 […]
Deep Sky / Gear / Long Exposure Photography
M16, The Eagle Nebula in Serpens
I was able to get an hour of M16 tonight, and it was earlier in the night, so the dew/temperature (causing focus shift) wasn’t as bad. It’s still quite a strange object […]
Astro knowledge / Deep Sky / Gear / Long Exposure Photography
M27, The Dumbbell Nebula in Vulpecula
Another attempt. I’m getting the idea that longer integration times lead to better detail and noise reduction…
Deep Sky / Gear / Long Exposure Photography
M16, The Eagle Nebula in Serpens
Up way too late in early June, decided to try out some of the summer nebulae. Only picked up 11 frames before loss of guidestar behind the roof of the observatory. Not […]
Astro knowledge / Deep Sky / Gear / Long Exposure Photography
NGC 4725, Spiral Galaxy in Coma Berenices
Trying to round out the set of the largest galaxies visible from this latitude. This is another galaxy that I would not have known about if not for “The List” (see M106 […]
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.