Sounds like I got several of you to put on the thinking caps. THANKS. I wound up getting the FR reducer. Greg's comment below summed up what most of you...
No Doubt. As I've long said, "Many are called, few are chosen." ;-) Peace, Rod Mollise Author of Choosing and Using a Schmidt Cassegrain Telescope...and... The...
That's true. HOWSOMEEVER...you may find that one of the 66ED scopes like those from WO and Astronomics will basically show your MORE than an ST80 due to the...
Hi, last night I was zoomed in and focussed carefully using a fishing line diffraction mask on my C11. I zoomed out to center the star for alignment and saw...
I'm totally unfamiliar with the technique but if that big faint image in teh back is a typical out of focus donut then yes you need collimation. regards Greg N...
While your image doesn't necessarily suggest to me that the focus varies, it is very possible that your focal plane isn't perpendicular to the optical axis....
Hi I suspect that "big faint image" is a dust mote on the CCD face. This is a typical rendition of one. But the double "wire" is interesting. It seems to...
Hi Wade, I agree it looks that way. It could be that the chip isn't level in the case. All components between the visual back the the camera are fully engaged...
Hi Phil, do dust motes look exactly like the corrector plate with central obstruction? When I rotate the camera next time I'm out I'll be able to determine if...
... I live near Wally and Roland, I own a C14, yet my C14 can split Castor night after night, all winter long. Our own Dennis Perysk lives near Wally and...
Nope. Not at all. Astronomy is LAUGHABLY inexpensive these day compared to what it was when I got started--in 1965. ;-) Peace, Rod Mollise Author of Choosing...
... And I'm sure Meade is laughing all the way to the bank, NOT. ... Seriously, it's kinda weird seeing Meade ads in the January 2008 astro mags for (now)...
... Well them, a whole EP case full of Ethos's should be no problem then right ??? I agree with Rod. A C 8 is the same price now, as back in 1981 when I got my...
Allan
SCTUSER@...
Dec 2, 2007 3:29 am
100325
For real?! I've been debating replacing the st80 with the wo66ed scope for quite a while, but I was afraid the loss of lens diameter would be too much to take....
... to ... I guess I was misunderstood. Astronomy IS affordable now. Compared to a lot of things it's downright cheap. You don't even have to go as far as a...
... While I have no experience with the ST80, the little 66mm ED scopes are sweet. They won't ever replace the aperture of your SCT, but they have convinced me...
Hi It is an image of an out of focus "spot". Similar to an out of focus star when starting a collimation. But if you see that, you are too far out of focus...
... No, when ya mentioned boats, all I could think of is aeroplanes. Actually, books are what got me early on. Something like 10,000 in the house now, 5,000 on...
Allan
SCTUSER@...
Dec 2, 2007 2:46 pm
100330
Yup, I was looking through some old S&Ts last night. SCTs about the same price then as now with AC drives in RA only. A 4" Unitron (achro for those not old...
... compared to ... It is and it isn't. It would be more true to say that astronomy is a wonderfully scaleable hobby. You can participate in almost any ...
Hi Gang: The reuslts of half the judging board are in...and I hope to get the others ASAP. As soon as I get them, I will tote up the results immediately and...
I have been using an old starliner GEM for a long time that I have rebuilt for imaging. It carries my 10" SCT (an old LX-5 OTA) and my ED80 and works quite...
Hello group! New member here... and my first post is a tough question I think :( I would like to find out what the thick red grease used on the old Celestron...
Hi, I have star tested a C11 and found some spherical aberration. I would like to know if such aberration is common on SCT design. What could I do to improve...
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