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Craigslist, ebay and other Vintage Telescope Finds

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#8901 starman876

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Posted 11 August 2020 - 04:46 PM

anyone know which Questar this is?

 

q74.jpg

 

 


 

#8902 davidmcgo

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Posted 11 August 2020 - 05:10 PM

Looks like a 7 ota

 

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#8903 starman876

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Posted 11 August 2020 - 05:11 PM

Looks like a 7 ota

 

Dave

thats what I thought.   Will see when it gets here.  


 

#8904 clamchip

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Posted 11 August 2020 - 06:17 PM

Wow dreamscope alert!


 

#8905 starman876

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Posted 11 August 2020 - 06:55 PM

Wow dreamscope alert!

Thanks.  It might need some restoration.   Lucky for me Cumberland optics is right around the corner.    I have used them to restore other Questars I have had.  


 

#8906 clamchip

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Posted 11 August 2020 - 07:47 PM

Thanks.  It might need some restoration.   Lucky for me Cumberland optics is right around the corner.    I have used them to restore other Questars I have had.  

Please lots of pictures, let's see what you've got there when you get it and have time.

Rare and such a perfect size 7 inch.

I once owned a Meade 7 inch that was fabulous.

 

Robert


 

#8907 RichA

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Posted 12 August 2020 - 12:05 AM

Please lots of pictures, let's see what you've got there when you get it and have time.

Rare and such a perfect size 7 inch.

I once owned a Meade 7 inch that was fabulous.

 

Robert

I had the Meade and 2 x 7" Questars, the Meade in my opinion was as good.  I also had a Sky Watcher 180mm but didn't own it long enough to see how it stacked up.


 

#8908 CHASLX200

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Posted 12 August 2020 - 05:33 AM

I had the Meade and 2 x 7" Questars, the Meade in my opinion was as good.  I also had a Sky Watcher 180mm but didn't own it long enough to see how it stacked up.

I paid a arm and a leg for a Q7 and was not happy with it. Only had it for about 2 months back when we had real winters and it would never cool. Much bigger in person than anyone would ever think.  I never had a Meade 7" Mak but my friend did and it was good , but heavy.


Edited by CHASLX200, 12 August 2020 - 05:34 AM.

 

#8909 starman876

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Posted 12 August 2020 - 06:28 AM

I still have a Meade 7" Mak so it will be interesting to compare the two.  I have read other reviews about comparing the two and the Meade is good, but not quite the quality optics of the Questar.   With any big Mak cool down time is so important. That is a lot of glass on the front.  


Edited by starman876, 12 August 2020 - 06:30 AM.

 

#8910 starman876

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Posted 12 August 2020 - 06:31 AM

I paid a arm and a leg for a Q7 and was not happy with it. Only had it for about 2 months back when we had real winters and it would never cool. Much bigger in person than anyone would ever think.  I never had a Meade 7" Mak but my friend did and it was good , but heavy.

You mean the temperature kept dropping and the scope would never cool?  


 

#8911 RichA

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Posted 12 August 2020 - 10:04 AM

I paid a arm and a leg for a Q7 and was not happy with it. Only had it for about 2 months back when we had real winters and it would never cool. Much bigger in person than anyone would ever think.  I never had a Meade 7" Mak but my friend did and it was good , but heavy.

Yes, the LX50/200 Maks had that stupid 8lb weight inside the OTA to balance on the "too short for it fork mount."  However, the Meade 7" OTA didn't, so it also cooled down faster.


 

#8912 starman876

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Posted 12 August 2020 - 12:55 PM

Yes, the LX50/200 Maks had that stupid 8lb weight inside the OTA to balance on the "too short for it fork mount."  However, the Meade 7" OTA didn't, so it also cooled down faster.

and to take that weight out is ineresting.  They siliconed it is place.  


 

#8913 clamchip

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Posted 12 August 2020 - 08:10 PM

I never had a problem with cool down or the 8 pound counterweight inside.

Its nice that the Meade comes with fans.

Generally though I think the Q7 comes with exotic ingredients to help with thermal

management like Quartz mirrors and Titanium structure.

 

Robert 


Edited by clamchip, 12 August 2020 - 08:11 PM.

 

#8914 davidmcgo

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Posted 12 August 2020 - 08:38 PM

The recent Q7 Lightweight does all that supposedly but the originals did not.  But from experimenting with Reflectix wraps, you have nothing to fear except a shiny metallized bubble wrap jacket hiding the purple.

Dave


 

#8915 starman876

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Posted 12 August 2020 - 09:04 PM

The recent Q7 Lightweight does all that supposedly but the originals did not.  But from experimenting with Reflectix wraps, you have nothing to fear except a shiny metallized bubble wrap jacket hiding the purple.

Dave

So if you use the Q7 only when it is nice outside there are no issues.  Sounds like the perfect scope to me.  


 

#8916 RichA

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Posted 12 August 2020 - 09:26 PM

So if you use the Q7 only when it is nice outside there are no issues.  Sounds like the perfect scope to me.  

The Q7, like the Meade always work better when 1, outdoor temps match indoor (no change) and when temperatures outdoors are stable.


 

#8917 CharlieB

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Posted 12 August 2020 - 09:57 PM

Let's wind or way back to the ads.  You are welcome to start a separate Q7 topic.  I'm sure that would be interesting.  Thank you.


 

#8918 starman876

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Posted 13 August 2020 - 06:43 AM

Let's wind or way back to the ads.  You are welcome to start a separate Q7 topic.  I'm sure that would be interesting.  Thank you.

I am so sorry Charlie.  I thought this was the thread where we talked about what we found after we responded to an ad??


 

#8919 CharlieB

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Posted 13 August 2020 - 07:26 AM

You are right - it was my error.  I thought I was in the Ads forum.  Please forgive my late night modding.  Please continue.

 

Charlie


 

#8920 davidmcgo

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Posted 13 August 2020 - 07:51 AM

Get a roll of Reflectix.  It is inexpensive.  Wrap the OTA with it and it will kill a lot of the convection plume that blurs the image.

 

I need to try something a little thinner for my 3.5 to block less of the finder but almost all of the distorting thermals are inside the tube and due to cooling through the tube wall.

 

Insulate that and it really becomes a non issue.

 

And if you still don’t like it, I’d give it a happy forever home in San Diego ;-)

 

Dave

So if you use the Q7 only when it is nice outside there are no issues.  Sounds like the perfect scope to me.  


 

#8921 starman876

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Posted 13 August 2020 - 08:14 AM

You are right - it was my error.  I thought I was in the Ads forum.  Please forgive my late night modding.  Please continue.

 

Charlie

I understand, been there done that.  Thanks for the response.  You have a wonderful day.


 

#8922 starman876

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Posted 13 August 2020 - 08:16 AM

Get a roll of Reflectix.  It is inexpensive.  Wrap the OTA with it and it will kill a lot of the convection plume that blurs the image.

 

I need to try something a little thinner for my 3.5 to block less of the finder but almost all of the distorting thermals are inside the tube and due to cooling through the tube wall.

 

Insulate that and it really becomes a non issue.

 

And if you still don’t like it, I’d give it a happy forever home in San Diego ;-)

 

Dave

drill holes in the tube wall and then put a fan on it. Make sure to cover the holes with a filter for dust.  smirk.gif


Edited by starman876, 13 August 2020 - 08:16 AM.

 

#8923 Terra Nova

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Posted 13 August 2020 - 08:19 AM

There’s several Q7 owners and good info and discussion on the Q7 over in the Questar Forum. You might consider posting over there!


 

#8924 CharlieB

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Posted 13 August 2020 - 03:04 PM

Folks, to avoid any confusion (on my part) I'm going to lock this topic and open a new one simply named "Vintage Telescope Finds".  It's too much like "Craigslist, ebay and other Vintage Telescope Ads".  


 


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