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SHOW US YOUR DOBSONIAN! ****

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#951 icomet

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Posted 09 July 2020 - 08:56 PM

Here's what I have so far.

Will keep you all posted.

 

Clear Skies.

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#952 Colin exraaf

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Posted 14 July 2020 - 01:44 AM

All ready for Jupiter ... at its closest point to Earth tonight...!! 14/7/2020

 

P7140072.jpg

 

Col ( Down Under )


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#953 osbourne one-nil

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Posted 14 July 2020 - 07:02 AM

It'll be directly overhead for you won't it? Fab looking scope - have fun!


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#954 Bowser82

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Posted 14 July 2020 - 01:48 PM

Newest addition.

Tim

Hey awesome scope! I’m currently expecting delivery today on my Apertura AD8 and I was wondering if you made that extra shroud on the end or it was purchased? I’m near nyc so my light pollution level is high



#955 icomet

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Posted 16 July 2020 - 12:11 PM

It's getting closer to being finished.

(10" f/6 "Swayze")

 

Clear Skies.

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#956 Heitman

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Posted 16 July 2020 - 01:34 PM

Hey awesome scope! I’m currently expecting delivery today on my Apertura AD8 and I was wondering if you made that extra shroud on the end or it was purchased? I’m near nyc so my light pollution level is high

Hello,

It"s a dew shield made by Astrozap. It"s a must have for me. The scopes they make now have the secondary up close to the front, so the shield is very necessary for me.

I really like the scope! Hope you enjoy yours!

Tim  



#957 sunrag

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Posted 16 July 2020 - 01:54 PM

Newest addition.

Tim

Where did you get the nice dew-shield?



#958 Heitman

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Posted 16 July 2020 - 04:26 PM

I got it from High Point Scientific. Astrozap Flexible Dew Shield for 12" Astro-Tech/ GSO RC - AZ128



#959 icomet

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Posted 16 July 2020 - 07:14 PM

. . . has DSC's also.

 

Clear Skies.

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#960 sw196060

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Posted 17 July 2020 - 09:20 AM

Nice dob.  Did you make all the wooden parts yourself?

Did you use 3/4" or 1/2" ply?

 

thx



#961 HellsKitchen

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Posted 18 July 2020 - 05:38 AM

My 8" F/6, which only last Thursday gave me views of Jupiter and Saturn that I would not have believed if I didn't see it with my own eyes. 

 

xSWyEu8.jpg

 

 

 

The front end... black! 

 

6uQgrWs.jpg

 

 

 

Mirror cell, well inboard to help reduce stray light

 

TuPwjO3.jpg

 

This is nothing more than a simple tube, on a simple stand, with a simple mirror cell, and it has given me views over the years which are flat-out ridiculous, latest example being last Thursday on Jupiter and Saturn. Had to be seen to be believed. I myself wouldn't have believed it if I did not see it for myself. The 3 and 4mm Delites have just payed for themselves on that Thursday evening. I would invest in the shortest Vixen HRs if only they didn't have that tiny FOV. 


Edited by HellsKitchen, 18 July 2020 - 06:30 AM.

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#962 sw196060

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Posted 18 July 2020 - 06:44 AM

Nice. What kind of mirror does it have?
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#963 HellsKitchen

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Posted 18 July 2020 - 08:42 AM

Nice. What kind of mirror does it have?

 

From what I've been told, Takahashi. Both primary and secondary. 

 

Stars on that night at 400x focused into crisp points with brighter ones showing a diffraction ring. Saturn at 400x was bloody photographic. Last Thursday was a nearly religious experience.  Rediculous. To see Jupiter and Saturn like that, I don't even know what to say. 

 

I used my Glatter laser and TuBlug to align the mirrors, took all of 2 minutes. 


Edited by HellsKitchen, 18 July 2020 - 08:58 AM.


#964 cuzimthedad

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Posted 18 July 2020 - 04:13 PM

 

I used my Glatter laser and TuBlug to align the mirrors, took all of 2 minutes. 

Don't ya just love it!



#965 Kunama

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Posted 18 July 2020 - 08:15 PM

That's an interesting scope Sab, do you know who built it? 

Have you tried it with the Nagler 26?



#966 HellsKitchen

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Posted 19 July 2020 - 06:06 AM

Don't ya just love it!

 

I know right! Genius thing. Mad fun to tease cats with aswell laugh.gif I still want to get a Catseye triple pack for that last bit of accuracy in the case of nights such as the one I just experienced. Jupiter needs it when the seeing is mental, the detail is that rediculously fine. The 8" has a Catseye triangle and my 12" the radioactive spot. 

 

 

 

That's an interesting scope Sab, do you know who built it? 

Have you tried it with the Nagler 26?

 

Astronomy Alive in Melbourne. I've had the scope for a decade now (****) and the mirrors are still essentially pristine.  Nah haven't tried the 26 Nagler yet, my work doesn't offer any work/life balance atm so don't have the energy nor freedom to observe at all, but hopefully soon...

 


Edited by HellsKitchen, 19 July 2020 - 08:55 PM.


#967 Jeff L

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Posted 20 July 2020 - 05:41 PM

I got this in April and haven’t used anything else

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#968 icomet

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Posted 20 July 2020 - 05:53 PM

Telescope sleeping bag.

 

Clear Skies.

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#969 Praise.M42

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Posted 24 July 2020 - 11:41 AM

After a thread even remotely concerning the possibility of selling my big dob, I think I own it some respect and appreciation.

This is my 'Big Dob', a RP Astro S-Star 16 inch truss dobsonian with GSO f4,5 optics. It was sold by a very well known shop here in Italy some years ago and I had the luck to find one on the used market to enjoy.

Some peculiarities include:

- Foldable permanently attached alt bearings 

- Front collimatable primary mirror cell

- Single arm secondary mirror support with thin steel wire tensioning (resulting in six very thin diffraction spikes)

Hope you like it!

 

 

 

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#970 mikee1

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Posted 24 July 2020 - 01:34 PM

That has some very clever features Praise. Are the Alt Bearing hinges spring loaded or it is entirely dependent on the cross bar for rigidity? It looks very well thought out (and I imagine very light weight!). Very nice telescope!

 

mike



#971 Praise.M42

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Posted 24 July 2020 - 01:51 PM

Are the Alt Bearing hinges spring loaded or it is entirely dependent on the cross bar for rigidity? It looks very well thought out (and I imagine very light weight!

Thanks you Mike!

The alt bearings hinges are not spring loaded and they depend only on the cross bar for rigidity indeed; the cross bar is very rigid and the bolts are solid and overdimensioned.

The dob is not so light, as a matter of fact, and my back confirms that lol.gif the GSO mirror cell and primary mirror weigh a ton. But it is very compact, so maybe in the future i could upgrade the mirrors with something lighter and higher quality



#972 BlueTrane2028

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Posted 28 July 2020 - 10:31 PM

I’ve posted this before but it was nice to get out under the stars again. Life kept me away for a bit there. Caught what’s likely to be my last view of Neowise, looked at the Moon, Saturn and Jupiter, and even dared to share the views with some fellow stargazers.

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Edited by BlueTrane2028, 28 July 2020 - 10:44 PM.

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#973 icomet

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Posted 31 July 2020 - 10:54 PM

10", dedicated binoviewer "comet catcher", with DSC's and multiple fans.

 

Clear Skies.

 

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#974 Augustus

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Posted 31 July 2020 - 11:46 PM

14.7" f/2.89 with even more mods - corner protectors, dew heaters, shroud

 

IMG_6126c.jpg

 

 


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#975 mikee1

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Posted 31 July 2020 - 11:55 PM

Wow, that’s about as compact as it gets!  What are the views like?


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