Hi Fellow Big-Dobbers! I have designed and built a new observing accessory which I really enjoy. I call it the Markless Mobile Ladder Platform, or MMLP for...
... For ... weekend is ... and ... and ... over ... Neal: While waiting for the 15" to arrive, I will be driving cross country from calf to NY at end of May...
... These are in June, though not the first week: Grand Canyon Star Party June 21-28, 2003 Tucson Amateur Astronomy Association Shingletown Star Party June...
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Hi ____________, That's a nice looking _scope_. - Charlie Starks ... From: bigdob@yahoogroups.com To: bigdob@yahoogroups.com Sent: Friday, May 02, 2003 4:14 PM...
Hi Elliott, I agree with you that the Mid-South Star Gaze is a great star party. James Hill @ the Rainwater Observatory goes to a lot of effort to make sure...
I built a 36" with a Nasmyth fixed height focus. One keeps both feet on the floor when observing. Sure beats climbing a tall ladder. I have to say though, I...
Discovery offers their 12.5" truss Dob with a 2.6" mirror standard and a 2.1" mirror as an option. Mostly, I observe planets and I live just outside of light...
you will gain a little on contrast. you will not lose anything unless you get into photography heavy. and that probally isnt the best choice for that anyway. ...
you list many of the reasons I decided to go with a 22" as the best comprimise between light grasp.portability,cost,ect John Kagey <<I tend to agree with Jack...
the gain in contrast will be "very very" small though. if the cost of the 2.6" is lower go with it. you will gain a little on contrast. you will not lose...
... live ... scopes ... mirror ... discovering ... Harry, I agonized over this choice with my recent order of a 15"PDHQ. In my case it was 2.6" vs 3.1". I also...
Actually, if you highlight the second line and copy, then click the link and next past the remaining part of the URL in the location bar you will get there....
... 25" ... size? Neal ... Hi Neal, there was an article a few years back in Sky & Tel, or Astronomy about his observatory, with several pictures, where he ...
you have peaked MY interest... so how DO you use it if not with a ladder? I have always thought an auto chair would be easy to design and build but would...
... light path going through a hole in the primary, a small tertiary elliptical flat is mounted ahead of the primary which directs the light path out the side...
... Ah, but .... how large are the secondary mirrors, percentage-wise ? I know f-ratio and other parameters come into play, but I'm just curious what a ...
Hi Dave, you bring up a very good point! My secondary is just under 11" diameter, a 30% obstruction. Many would argue that 30% is too high. This is something...
Jim...I don't recall it being 25" ( I thought 30") but could be wrong. Anyone have the month and year on the Sky and Tel or Astonomy mag. article? He also had...
Hi Neal, I'll try to find the month/year on Dave Kriege's observatory article. The steel truss tube OTA on my 36" is about 12' long. And yes I do give up a...
indeed Dave does have a 25, prefers a 25 (his personal preference), and has an observatory for it... g. RXDesign \--- In bigdob@yahoogroups.com, "Jim...
Neal, a 40mm eyepiece yields 300x. I feel that about 190x is as low as one can go with any 36", as exit pupil becomes rather large. I modified a Celestron...
We really do have a lot in common. Try this....I made a 15" aperture mask and use a Zeiss bino viewer. Results must be comprarable. I guess the only thing...
Jim Any pics of your setup? How do you avoid the ladder? tnx jtm ... scope and computer controlled Alt/Az mount weigh about a ton. And for anyone out there...
