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Post a picture of your refractors (part 8)

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1020 replies to this topic

#951 Stellar1

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Posted 25 March 2020 - 05:55 PM

Moon Unit:

 

attachicon.gifFOA60Q.jpg

Takahashi FOA-60Q: D=60mm, F=900mm

Love that mount with that handle, i'm assuming you can adjust the tension with which it moves?



#952 Sergey Stern

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Posted 25 March 2020 - 06:06 PM

Whoa! that Nagler (the king) must weigh as much as the scope.

Scope - 1430g.

Nagler 31 and Diagonal Mirror - 1350g.

 

Sergey


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#953 desertlens

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Posted 25 March 2020 - 09:03 PM

Love that mount with that handle, i'm assuming you can adjust the tension with which it moves?

Yes, the bearings contain clutches which are adjustable. This controls motions with the pan handle. The slo-mo controls are largely unaffected by tensioning.


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#954 KevH

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Posted 26 March 2020 - 07:48 PM

Astro-Tech AT102ED...

 

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#955 mikerepp

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Posted 27 March 2020 - 07:00 AM

My At115 and my ES 6" on a TW II.

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#956 GrafikDihzahyn

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Posted 27 March 2020 - 04:21 PM

First light with the new camera a couple days ago. Still working on FF spacing and offsets. Need some more clear skies..

 

Can you tell which pup is mine vs. my wife's? lol.gif

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#957 tonyt

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Posted 27 March 2020 - 05:53 PM

First light with the new camera a couple days ago. Still working on FF spacing and offsets. Need some more clear skies..

 

Can you tell which pup is mine vs. my wife's? lol.gif

The Corgi's make the photo twice as good :)


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#958 R Botero

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Posted 28 March 2020 - 02:44 AM

This one arrived yesterday for me! 

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#959 Stellar1

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Posted 29 March 2020 - 10:51 AM

First light with the new camera a couple days ago. Still working on FF spacing and offsets. Need some more clear skies..

 

Can you tell which pup is mine vs. my wife's? lol.gif

lol, that dog is totally posing for that picture with a look on his mug like he just bought the scope.lol.gif Telescope.gif


Edited by Stellar1, 29 March 2020 - 10:53 AM.

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#960 SpaceX

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Posted 29 March 2020 - 01:58 PM

Picture

The FC-100DL is a true beauty.

May I recommend an interesting addition to your quantum mechanics book collection?

 

Introductory Quantum Mechanics by Vladimir Rojansky 1938. A book straight from the golden age of nuclear physics. This is an excellent and timeless Quantum Mechanics book for beginners. It is super easy to read and, I dare say a lot of fun. If I could pick one book to keep for life, its this one.


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#961 NickWDavis

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Posted 29 March 2020 - 09:25 PM

The FC-100DL is a true beauty.

May I recommend an interesting addition to your quantum mechanics book collection?

 

Introductory Quantum Mechanics by Vladimir Rojansky 1938. A book straight from the golden age of nuclear physics. This is an excellent and timeless Quantum Mechanics book for beginners. It is super easy to read and, I dare say a lot of fun. If I could pick one book to keep for life, its this one.

I’ll keep my eye out for that Rojansky text book. I have Griffiths, Eisberg & Resnick, and Shankar on the shelf just out of frame on the right hand side of that photo.


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#962 MarkGregory

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Posted 30 March 2020 - 03:27 AM

I'm going to start Part 8 with a picture of my new favorite refractor, the venerable TEC 140.

 

attachicon.gifIMG_7612.JPG

My buddy who is an engineer has a Tek. When I saw the surface of the Moon through his scope it was a life changing moment. That was over 12 years ago and I still fondly remember that night and view. Teks are amazing scopes. Mark


Edited by MarkGregory, 30 March 2020 - 03:28 AM.

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#963 MarkGregory

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Posted 30 March 2020 - 03:31 AM

Is this an Achromat telescope? Did you swap out the single speed focuser for a dual speed?

Wow, that scope with the King Kong of oculars in it looks great. 



#964 MarkGregory

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Posted 30 March 2020 - 03:35 AM

Takahashi FS-128 (Callisto)

 

attachicon.gifIMG_3587.jpg

 

 

Takahashi FOA-60 (Io)

 

attachicon.gifIMG_5487.JPG

Now I am really impressed a Panoptic ocular in a finder scope. First time I ever saw that.



#965 MarkGregory

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Posted 30 March 2020 - 03:38 AM

Ahh.. You guys and your fancy shmancy apochromats.

Here's me and my humble achromat...

All I can say is, “wow.”


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#966 MarkGregory

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Posted 30 March 2020 - 03:45 AM

Older scope but new to me ... recently acquired AT111EDT, first generation edition. Beautiful scope, amazingly compact dense design, but expands like an accordion for operational use! I love it - beautifully made, with really stunning planetary and stellar views. Here it is shown with my C9 on a Twilight II with a Pentax J60c finder .. perfectly weighted counterparts - I see the same thing when looking through the AT or the C9. Bringing it to AHSP and hoping for great viewing nights.

I have the newer version of the 111 and love it. Such a magnificent telescope. We are fortunate to own ours. They are hard to come by these days. Mark 



#967 MarkGregory

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Posted 30 March 2020 - 03:47 AM

Future astronomer there!!

Little people and telescopes. Love it. Mark 


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#968 MarkGregory

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Posted 30 March 2020 - 04:15 AM

My AstroTech 111 triplet

 

 

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#969 daquad

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Posted 30 March 2020 - 11:06 AM

I’ll keep my eye out for that Rojansky text book. I have Griffiths, Eisberg & Resnick, and Shankar on the shelf just out of frame on the right hand side of that photo.

I used Griffiths for the QM course I took.  No answers for the pages and pages of calculations, but fortunately the professor collected and graded all our homework.

 

Dom Q.


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#970 NickWDavis

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Posted 30 March 2020 - 01:59 PM

I used Griffiths for the QM course I took.  No answers for the pages and pages of calculations, but fortunately the professor collected and graded all our homework.

 

Dom Q.

Me too.

I think the major problem with Griffiths is that a lot of the "lessons" are in the problems and not in the main body of the text. If you get an instructor who doesn't assign the right problems you can end up missing a lot of important stuff.


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#971 daquad

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Posted 30 March 2020 - 06:31 PM

Me too.

I think the major problem with Griffiths is that a lot of the "lessons" are in the problems and not in the main body of the text. If you get an instructor who doesn't assign the right problems you can end up missing a lot of important stuff.

True.  Not only that.  I found that I could do all of the theoretical proofs that were the majority of the homework, but I struggled with the tests, which were applications.  I told the professor that the homework and the lectures needed to include more focus on applications.  My grade was B+  OK now I am way off topic, so I will quit here.

 

Dom Q.  


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#972 Jeff B

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Posted 30 March 2020 - 09:38 PM

First light with the new camera a couple days ago. Still working on FF spacing and offsets. Need some more clear skies..

 

Can you tell which pup is mine vs. my wife's? lol.gif

The pup is loving this virus stay at home stuff:  "I've got my human here 24/7 and this new hydrant is AWESOME!"


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#973 RadioAstronomer

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Posted 30 March 2020 - 11:02 PM

TV-102 ready for some lunar exploration.

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#974 Birddogoby

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Posted 31 March 2020 - 10:58 AM

I might as well join the fray!  I’ve seen lots of eye candy that’s making me drool. I started AP last month after getting my initial rig set up.  My Tak 120 sure is a long ways from my home built 8” Newtonian from the 60’s.
 
Takahashi TSA-120

 

 

 


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#975 Birddogoby

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Posted 31 March 2020 - 11:04 AM

Oops! I screwed up in loading the picture.  I haven’t worked much in CN, obviously!!  The full picture is fine but the thumbnail sucks.ill try again.




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