Product Questions
Thank you.
In addition to the Alan Gee & the provided 19mm spacer tubes, I would need:
BTA T-adapter
Baader Varilock 29 (at 20mm position)
Baader Centering ring
Is that correct?
Thank you.
Celestron C11 (no edge)
2956233 Baader 2" ClickLock SCL (3.3")
2956100 Baader 2" ClickLock Diagonal Mirror
2956214 Baader 2" to 1¼" ClickLock Reducer (T-2 part #15B) with 31.5 Eyepieces
In the manual it seem need :
2408150 Baader 2" nosepiece to T-2 / M48 (T-2 part #16)
2958242 Baader Expansion Ring 2"a/T-2i with 1mm optical path length (T-2 part #28)
But it's not clear. Can you explain ?
Thank you,
Ron DiIulio, Director
Astronomy Program
University of North Texas, USA
In that that case is there any adaptator to be used ?
What if a crayford is used ?
Thanks a lot
Specifically, I have an AG I want to use again after a pause of a few years. It is currently in a 2" push-fitting without spacers which attaches the telescope to a Starlight AO unit, OAG, filterwheel and 694 CCD. The total from the back glass of the AG to the chip is about 129mm with the most compact connections I've found, or 8mm more than ideal.
I think for this reason, someone once told me to place the AG behind the AO and in front of the OAG/Filterwheel/CCD. However, this seems to me to be less than idea too. At the time, I ended up not using this set-up much in favour of the Hyperstar because the OTA was on a Fork-Wedge combination and quite wobbly. I have now deforked the OTA and put it on a decent EQ mount - so want to try this set-up again.
So my questions are: what is the best configuration? In the back of the optical tube inside the push-fitting with the 129mm to the chip or placed behind the AO and then at the "ideal" 121mm from that point? And what is the relation between the 146mm and 121mm?
Also, If I want to use the Alan Gee telecompressor for Prime photography using Barlows / Eyepiece Projection, do I need to get additional adapters?
Thanks!
Thank you.
- Specifications
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Additional Information
EAN Code 4047825011572 Manufacturer Baader Planetarium SKU (#) 2454400 Weight (NETTO) 0.09 Optical length (mm) < 50 AR-Coating Multi-Coated (MC) Usage 8" Schmidt-Cassegrains Optical Design Field Flattener, Telecompressor compatible telescopes Schmidt-Cassegrain
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