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#1876 Stargazer3236

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Posted 29 March 2020 - 08:09 PM

attachicon.gifP3261097b.jpg

 

My recently acquired 2045. A nicely made scope with a bunch of accessories and aluminium case for 100 gbp. I haven't DPAC tested it yet but the moon looked good at x250. The secondary obstruction is 45% which must affect it but I'm impressed.

Against is the finder and the unreliable tripod adjustment. Focusing is on the stiff side but no image shift.

 

David

My first real store bought telescope was a Meade 2045 back in 1985.


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#1877 davidc135

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Posted 30 March 2020 - 02:41 AM

My first real store bought telescope was a Meade 2045 back in 1985.

Can you remember how much it cost back then?   David


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#1878 Eric P

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Posted 30 March 2020 - 01:44 PM

My JSO Space 10

 

_xLpO_ZF7Hn6_1824x0_kWXURFLk.jpg


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#1879 Stargazer3236

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Posted 30 March 2020 - 03:35 PM

Can you remember how much it cost back then?   David

$495 USD


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#1880 Sammy

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Posted 30 March 2020 - 04:16 PM

Sold my Celestron N5i, so the Meade LX10 is alone for now.......

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#1881 Rick-T137

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Posted 30 March 2020 - 05:14 PM

Sold my Celestron N5i, so the Meade LX10 is alone for now.......

Love that mount (honestly, love the whole scope!). What is it? An LXD-55?



#1882 Sammy

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Posted 30 March 2020 - 06:08 PM

Love that mount (honestly, love the whole scope!). What is it? An LXD-55?

Its actually a Vixen GP with LXD55 motors and autostar 8) The best mount I have ever owned so far......


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#1883 EXT64

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Posted 31 March 2020 - 09:11 PM

Here's my first/new astrophoto setup.  The last one I used was in an observatory in college, so it has been quite a learning experience.

 

C9.25 (Classic Starbright USA OTA)

Celestron R/C

Celestron OAG with ASI290MM

Nikon D5300

Losmandy G11

iOptron Pier

Mini computer, dew heater, etc mounted to pier.

 

IMG 20200321 185647014 small

 


Edited by EXT64, 01 April 2020 - 07:17 AM.

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#1884 luxo II

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Posted 01 April 2020 - 09:16 PM

And... this little kitty - made by Jim Riffle - sits on the shelf above my computer, for inspiration on rainy days...
It does actually work, 50mm f/12 alive lowest power is about 23X with a Huygens eyepiece.

The mount is a classic old-school EQ, with fully functional RA worm and tangent arm on the dec axis ...

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  • Mikro Mak.jpg

Edited by luxo II, 02 April 2020 - 04:13 AM.

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#1885 Jond105

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Posted 01 April 2020 - 09:26 PM

Great nights for observing coming up. 

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#1886 Garry

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Posted 02 April 2020 - 05:38 PM

Sunday 3/15 at Lake Hudson with my CF-C11XLT with it’s winter coat still on😊.

D020D3B2-AC4D-4EC5-AEA5-05C8948FBCA3.jpeg

 

“Great nights for observing coming up.“ Yes Jond105 it’s looking good. Little less moonlight

would be preferred, but will setup on deck at home and try to catch a couple comets.

 

Garry


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#1887 Dwight J

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Posted 03 April 2020 - 11:33 AM

My venerable C11 ready to go to work.

 

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Edited by Dwight J, 03 April 2020 - 12:21 PM.

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#1888 luxo II

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Posted 04 April 2020 - 06:30 PM

Making the most of the clear skies this week... a pair of 6" maks (MK67 and M615) side-by-side on a Rowan AZ100, with Nexus an slow motions, on a Berlebach Planet tripod. This was extremely pleasant to use, and the stability of the big tripod paid off handsomely with precision positioning every time.

Another aspect is that with smallish fields of view (less than 1 degree) it is important to have it balanced laterally was well as for-and-aft. This avoids placing high stresses on the tripod head, which would otherwise cause it to flex and degrade the positioning accuracy. With a small wide-field refractor, balance won't matter so much, but with maks or SCT's it will.

Another tip is on a soft surface like grass or dirt push the tripod feet in very firmly. You’ll be surprised at how badly a little movement of the feet affects the pointing accuracy of your mount. This is why I have my tripod set with the feet well apart.

The AZ100 really is a pleasure to use, vastly superior to any other altaz I've used. It would easily handle larger scopes too.

Attached Thumbnails

  • IMG_0274.jpg
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Edited by luxo II, 04 April 2020 - 07:35 PM.

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#1889 dhkaiser

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Posted 04 April 2020 - 06:36 PM

Looks like that might have individual alt adjustments, does it have individual adjustment to align both scopes together?



#1890 luxo II

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Posted 04 April 2020 - 07:21 PM

Well... there are two issues to address. Firstly the (mis)alignment of the cradles on the mount, and for each scope, the misalignment of its dovetail vs it’s optical axis.

My preference would be to align the two cradles accurately to each other, then deal with each scope and insert a shim between the OTA and dovetail, as necessary.

The mount doesn’t have adjustments per-se but there is another way - align the Nexus with one scope and use this for acquiring objects, then measure the offset between the two scopes - it remains constant. I’m using the Nexus it’s easy to apply the shift to put obects in the second scope.

Edited by luxo II, 04 April 2020 - 07:28 PM.


#1891 Stargazer3236

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Posted 04 April 2020 - 07:57 PM

Making the most of the clear skies this week... a pair of 6" maks (MK67 and M615) side-by-side on a Rowan AZ100, with Nexus an slow motions, on a Berlebach Planet tripod. This was extremely pleasant to use, and the stability of the big tripod paid off handsomely with precision positioning every time.

Another aspect is that with smallish fields of view (less than 1 degree) it is important to have it balanced laterally was well as for-and-aft. This avoids placing high stresses on the tripod head, which would otherwise cause it to flex and degrade the positioning accuracy. With a small wide-field refractor, balance won't matter so much, but with maks or SCT's it will.

Another tip is on a soft surface like grass or dirt push the tripod feet in very firmly. You’ll be surprised at how badly a little movement of the feet affects the pointing accuracy of your mount. This is why I have my tripod set with the feet well apart.

The AZ100 really is a pleasure to use, vastly superior to any other altaz I've used. It would easily handle larger scopes too.

What eyepiece turret are you using?



#1892 skybsd

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Posted 04 April 2020 - 08:09 PM

Hello Dan, 

Good to hear from you., 

 

Looks like that might have individual alt adjustments, does it have individual adjustment to align both scopes together?

Dave at Rowan Engineering recently launched a new accessory for just this purpose - the AZ100 Altitude Adjuster - listing of all accessories for the mount here.., 

 

I recently bought one but haven't had the time to try it out yet.., 

 

Hope this helps.., 

 

Best.., 

 

skybsd 


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#1893 luxo II

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Posted 04 April 2020 - 09:23 PM

It’s a van slyke turret :) Despite its size it’s beautifully designed, holds eyepieces securely and isn’t as heavy as it looks. It requires about 10mm less backfocus than a standard 2” diagonal, too. The handle on the back is convenient, to steer the scope manually and when carrying the turret fully loaded.

If you are thinking of a turret you need to make sure the backend is strong enough to support the weight of all the eyepieces and the turret - the cheap focusers secured by 3 tiny grub screws are no good - the weight will rip them off the back of the scope.

The M615 has moving mirror focussing and the same back as an SCT (and hence can take the turret) whereas the MK67 has fixed mirrors and the original Russian crayford.

If you can find one, the MK66 has moving mirror focusing and also the SCT screwthread on the back, which imho is probably the best configuration of their 6” MCTs.

Edited by luxo II, 04 April 2020 - 09:55 PM.


#1894 Stargazer3236

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Posted 04 April 2020 - 10:02 PM

Here is my refurbished ETX-90, on an 884 Meade EQ tripod, Focus extension, with a 3D printed front cover, 3D printed Bahtinov mask, a 3D printed dovetail shoe for a finder, 3D printed Tripod Spreader, 3D printed Tripod leg clip and 3D printed hand controller holder. I bought the original ETX-90 from a local Craigslist sale, but the mount was trash. The tripod was in excellent condition as was the OTA. I bought the newer mount from Scopehed and attached the OTA to it. I wrapped a galaxy picture that was once a tube dew shield no longer made around the OTA to give it a PE look. I attached a Rigel Quik finder mount to the OTA and bought an Orion 6x30 RA finder for it too. The original hand controller was just a regular non goto hand controller, so I bought a brand new Audiostar for it. Now to just get some clear skies to use it.

 

ETX90 1.jpg

 

ETX90 2.jpg


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#1895 Chevy5759

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Posted 04 April 2020 - 10:04 PM

88A8D2A8-FE54-42BF-880B-EF7198A5553A.jpeg

57C257A4-6E61-4D82-B64E-261704014AFA.jpeg

 

The Edge11.


Edited by Chevy5759, 05 April 2020 - 01:12 PM.

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#1896 John59

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Posted 05 April 2020 - 11:40 AM

My new Cat.

Celestron CPC 925 Edge HD Deluxe

CPC mount on dolly.jpg


Edited by John59, 05 April 2020 - 11:40 AM.

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#1897 olivier737

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Posted 05 April 2020 - 04:47 PM

My beloved TEC Maksutov-Cassegrain... 300mm of pleasure!

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  • IMG_3542.jpg

Edited by olivier737, 05 April 2020 - 04:54 PM.

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#1898 stuart keenor

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Posted 05 April 2020 - 04:54 PM

My beloved Maksutov-Cassegrain... 300mm of pleasure!

. Lovely looking scope who’s the maker ? Mathias ? Intes optics ?

#1899 olivier737

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Posted 05 April 2020 - 05:02 PM

Yuri Petrunin from TEC.



#1900 stuart keenor

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Posted 05 April 2020 - 05:25 PM

Wow I did here there only a couple of the 12” Maks around 👏👍


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