[出售] Celestron Raidal Guider



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sn-10
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[出售] Celestron Raidal Guider

文章 sn-10 » 週日 05 4月, 2009 12:19

9成新, $400. :wink:
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funoooo
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Re: [出售] Celestron Raidal Guider

文章 funoooo » 週日 05 4月, 2009 14:08

sn-10 寫:9成新, $400. :wink:
I buy it. Please resevese for me.

funoooo

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sn-10
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文章 sn-10 » 週日 05 4月, 2009 14:16

Please pm me your contact number.

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willis
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文章 willis » 週日 05 4月, 2009 19:55

Just want to know more. What is the fuction of this radial guider? :?:

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funoooo
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文章 funoooo » 週日 05 4月, 2009 20:06

willis 寫:Just want to know more. What is the fuction of this radial guider? :?:
Use one scope to do teh autoguide and picture in the same time.

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sn-10
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文章 sn-10 » 週二 07 4月, 2009 08:59

Reserved.

深空
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文章 深空 » 週六 13 8月, 2011 16:52

出了么,我想要

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Re: [出售] Celestron Raidal Guider

文章 鄧登凳 » 週日 14 8月, 2011 01:43

funoooo 寫: I buy it. Please resevese for me.

funoooo
Interesting, you sold me one exactly the same and now you buy another one.

Maybe now you have the Lodestar guider and you want to use it.

Do make good use of it. I successfully autoguided my Meade 8 SCT with what you sold me and it is a very good product.

northwolfwu
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Re: [出售] Celestron Raidal Guider

文章 northwolfwu » 週日 14 8月, 2011 17:29

鄧登凳 寫:
funoooo 寫: I buy it. Please resevese for me.

funoooo
Interesting, you sold me one exactly the same and now you buy another one.

Maybe now you have the Lodestar guider and you want to use it.

Do make good use of it. I successfully autoguided my Meade 8 SCT with what you sold me and it is a very good product.
Would you like to tell what kind of guiding camera you use? I use the OAG like TS Model, C8 HD main scope and want use QHY5 or DMK21 as guiding camera. I wonder if I can pick up the guiding star with this setup.

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Re: [出售] Celestron Raidal Guider

文章 鄧登凳 » 週日 14 8月, 2011 17:39

northwolfwu 寫: Would you like to tell what kind of guiding camera you use? I use the OAG like TS Model, C8 HD main scope and want use QHY5 or DMK21 as guiding camera. I wonder if I can pick up the guiding star with this setup.
When I first tried this, I used Meade DSI (colour) and at that time, I did not have a camera-front filter system, so an IDAS-LPS-P2 was put at the front of the radial guider (OAG). The result was not very good, often the guide camera direction needed to be changed to find a guide star.

Later, I changed to Meade DSI-pro (monochrome) which was more sensitive. I added an adaptor at the back of the axial guider to accommodate filters and I now also have a clip filter. So the guide camera does not pass through any filter. With this system, I have never experienced any problem of finding a guide star. There is no need to adjust the angle. Usually, with 1 second explosure time, there are at least three to four stars on screen that can be selected.

northwolfwu
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Re: [出售] Celestron Raidal Guider

文章 northwolfwu » 週日 14 8月, 2011 23:02

鄧登凳 寫:
northwolfwu 寫: Would you like to tell what kind of guiding camera you use? I use the OAG like TS Model, C8 HD main scope and want use QHY5 or DMK21 as guiding camera. I wonder if I can pick up the guiding star with this setup.
When I first tried this, I used Meade DSI (colour) and at that time, I did not have a camera-front filter system, so an IDAS-LPS-P2 was put at the front of the radial guider (OAG). The result was not very good, often the guide camera direction needed to be changed to find a guide star.

Later, I changed to Meade DSI-pro (monochrome) which was more sensitive. I added an adaptor at the back of the axial guider to accommodate filters and I now also have a clip filter. So the guide camera does not pass through any filter. With this system, I have never experienced any problem of finding a guide star. There is no need to adjust the angle. Usually, with 1 second explosure time, there are at least three to four stars on screen that can be selected.
Thanks a lot!
Now I use P2 LP filter. Because I use 8300M, clip filter can't be used, P2 LP filter must be in front of OAG.
If using P2 in front of DSI Pro, is it difficult to select guiding star?

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Re: [出售] Celestron Raidal Guider

文章 鄧登凳 » 週日 14 8月, 2011 23:42

northwolfwu 寫: Thanks a lot!
Now I use P2 LP filter. Because I use 8300M, clip filter can't be used, P2 LP filter must be in front of OAG.
If using P2 in front of DSI Pro, is it difficult to select guiding star?
I have never tried the DSI-pro with the filter in front. However, my speculation is that for a star, P2 should reduce the light by around 30%, so it should be less than 0.5 visual magnitude. If this is the case, I think there should be likely a star found.

When changing from DSI to DSI-pro, the back focus of the guide camera increased by about 8mm, so an adaptor is needed at the camera side to increase the same back focus. That adaptor can accommodate the filter. So from that time onwards, the filter is always at the back and only affect the imaging camera but not the guide camera. As a result, I have never tried the configuration you mentioned.

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