Mount for ISTAR 150 f15
Posted 29 December 2010 - 11:57 AM
My budget for mount and tripod/pier is 2300.00.
I am leaning towards the G11 but over in the refractor section it was suggested that I could get away with an Atlas if I rigged up a Hargraves Strut.
My question is, what should I do, going with the latter constitutes a 1000.00 savings essentially but if this is going to be holding up a house with straws then forget it.
This will be a visual scope only.
Posted 29 December 2010 - 12:50 PM
Does your budget really accomodate a G11- or is this a stretch for you?
Do you intend to install your mount onto a permanent pier, or will you be requiring a tripod?
Do you need GoTo?
Posted 29 December 2010 - 01:00 PM
At this time, tripod.
Posted 29 December 2010 - 01:12 PM
For that payload, with a requirement to use a tripod, you're better off with the G11 - as long as you can afford it though, okay?
The weak link in the Atlas' system for this payload x moment arm, is the tripod & altitude fulcrum assembly.
Suggest putting a wanted ad for a few weeks before commit cash for brand new at this time.
Hope this helps..,
Posted 30 December 2010 - 02:41 PM
Posted 30 December 2010 - 05:27 PM
Posted 31 December 2010 - 09:04 PM
Is the altitude on the Optic Craft adjustable or is it fixed for your location?
Posted 01 January 2011 - 01:57 AM
Posted 01 January 2011 - 10:47 AM
Posted 06 January 2011 - 08:40 PM
Model 2 equatorial head assembly using 2.5" diameter shafts 1018 cold roll steel, with 24" long counter weight shafts and locking knobs. Also teflon bearing will be installed.
2.5" 303 stainless steel shafts for Model 2
6.6" Clock drive assembly with control box and installed on Model 2 with AC Hurst sync motor
Cradle 160MM OD tube. Made from aluminum with felt lined half circle supports and steel bands with take up tension knobs for clamping tub to cradle
Wedge made from aluminum plates square box design with turn buckle up / down movement for alignment and set for approximately 33 degrees with +/- 15 degrees adjustment and attached to top of your tripod base.
6" die cast setting circles black with white etched lettering
WARRANTY-- 5 years parts and labor
The best part, wayyyyyy under budget.
Posted 07 January 2011 - 10:26 AM
Posted 07 January 2011 - 09:14 PM
Posted 08 January 2011 - 12:03 PM
Posted 15 March 2011 - 10:40 AM
Tracking is excellent, even without a precise polar alignment. I had the moon centered with a 9mm and the image stayed centered for more than one hour, then I called it a night.
This rig is old school, know that going in. But this made in the USA inexpensive mount more than handles this long achro, even without a hargraves strut.
I am not the most techy of people but if you have any questions about this mount, let me know.