Category: ATM
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/
focus motor supplier
Home note: want http://www.electronickits.com/kit/complete/elec/ck1612.htm and either http://www.electronickits.com/kit/complete/motor/ck1405.htm (unipolar) OR http://www.electronickits.com/kit/complete/motor/ck1406.htm (bi-polar), depending on what the stepper is. Also, need to mod kit as shown in: http://www.orednet.org/~jgarlitz/focus_control.htm if it’s the bipolar kit, need […]
focus motor control
http://www.orednet.org/~jgarlitz/focus_control.htm
astro steppers
http://www.atmsite.org/contrib/Rowe/dastep/dastep.html
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.