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A Tale of Two Focusers

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#51 m9x18

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Posted 09 April 2020 - 01:06 PM

"All in all I’m very impressed with the MoonLite and it is a joy to use. It oozes quality and is beautiful to look at. I’ll have to eventually stop taking jpegs of it lol."

 

It's been a lot of fun following you on this focuser journey and it's been nice to see your photo documentation presented along the way. So please, keep the reports and jpegs coming!  


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#52 Shorty Barlow

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Posted 09 April 2020 - 01:10 PM

"All in all I’m very impressed with the MoonLite and it is a joy to use. It oozes quality and is beautiful to look at. I’ll have to eventually stop taking jpegs of it lol."

 

It's been a lot of fun following you on this focuser journey and it's been nice to see your photo documentation presented along the way. So please, keep the reports and jpegs coming!  

Thanks, I'm sure I can shoot a few more jpegs lol.


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#53 Shorty Barlow

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Posted 12 April 2020 - 01:57 PM

I’ve had three sessions now with the ST102 fitted with the MoonLite focuser and the AZ5 mount/tripod combination. The AZ5 is 4.9kg and the stock ST102 is 2.5kg. So, without accessories, this combination is at least feasible. When I fitted the TS Optics/GSO focuser I weighed the OTA and it was still about 2.5kg. So I assumed the GSO wasn’t really that much heavier than the stock Synta focuser. When I replaced the GSO with the Sky-Watcher/Long Perng focuser I weighed the OTA again. This time it was about 3kg. Still do-able with the AZ5 though. Bearing in mind at least another kilo could be added with the diagonal and eyepiece.

 

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Saturday I had a three hour rich field session with the ST102 which enabled me to really put the MoonLite through its paces. It certainly didn’t disappoint me. Everything is so precise and using it is a delight. In fact, once I had become more familiar with the MoonLite I ceased thinking about actually using it and it just did its job. So I could sweep for open clusters, the occasional globular, planetary nebula and other DSO’s and concentrate on observing. Later I realised that the supposed extra weight of the MoonLite wasn’t a problem. So I weighed the OTA on bathroom scales. It was about 2.5kg. At first, this didn’t make sense, until I re-weighed the Long Perng focuser and compared it with the GSO. The Long Perng was 1.4kg!

 

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So ignore what I said about the weight of the Long Perng focuser in an earlier post, I must have misread the scales (I have actually had brain damage).  Just picking one of the units up after the other will show the difference in weight.

 

 

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The OTA together with the APM diagonal weighs in at about 3kg, basically the same weight as the OTA with the Long Perng focuser. 

 

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Edited by Shorty Barlow, 12 April 2020 - 07:40 PM.


#54 Shorty Barlow

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Posted 19 June 2020 - 12:06 PM

Gimmie the MoonLite ...

 

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#55 Jond105

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Posted 25 June 2020 - 10:38 PM

After fighting with the screws I was finally able to get mine on. 

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#56 gnowellsct

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Posted 25 June 2020 - 11:12 PM

I have been skeptical about the need for rotating focusers because on a good focuser the diagonal rotates so nicely.

 

However, I have recently been using the rotating focuser.  It's not just an astrophotography thing (for those that do that).

 

Given the way the finder is positioned (mounted on the focuser) and given my propensity to put one scope on another, it is often the case that rotating the eyepiece diagonal is impossible.  Especially with oversized 30 and 40 mm eyepieces, there is a good chance that the rotation will impact or block the finder.

 

In those situations being able to rotate the entire rear assembly (finder rotates with everything else) is a true benefit.  Even for a mere visual observer.

 

Greg N



#57 Shorty Barlow

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Posted 26 June 2020 - 08:37 AM

After fighting with the screws I was finally able to get mine on. 

Very nice.


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#58 Shorty Barlow

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Posted 26 June 2020 - 08:41 AM

I have been skeptical about the need for rotating focusers because on a good focuser the diagonal rotates so nicely.

 

However, I have recently been using the rotating focuser.  It's not just an astrophotography thing (for those that do that).

 

Given the way the finder is positioned (mounted on the focuser) and given my propensity to put one scope on another, it is often the case that rotating the eyepiece diagonal is impossible.  Especially with oversized 30 and 40 mm eyepieces, there is a good chance that the rotation will impact or block the finder.

 

In those situations being able to rotate the entire rear assembly (finder rotates with everything else) is a true benefit.  Even for a mere visual observer.

 

Greg N

Rotating the entire focuser can sometimes affect collimation. Although, for me, the advantages of being able to rotate the entire focuser seriously outweigh any disadvantages. 


Edited by Shorty Barlow, 26 June 2020 - 08:41 AM.


#59 Echolight

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Posted 26 June 2020 - 11:48 AM

Thinkin I need a green Moonlite and green Losmandy dovetail for the C6R now.

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#60 Jond105

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Posted 26 June 2020 - 11:53 AM

Thinkin I need a green Moonlite and green Losmandy dovetail for the C6R now.

You should get the orange to match the celestron logo lol



#61 Shorty Barlow

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Posted 26 June 2020 - 12:10 PM

Yeah, orange would match. Although green and orange wouldn't clash. You could call it the 'apples and oranges' customisation lol.



#62 Shorty Barlow

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Posted 26 June 2020 - 12:15 PM

Evostar 80ED and MoonLite with matching dovetail:

 

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