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Thinking about trying a SV115 TMB/LZOS again...

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78 replies to this topic

#26 NHRob

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Posted 25 May 2014 - 04:30 PM

Since good health, free time, and good skies can't
be purchased, you might as well purchase what
you can ... scopes!
Precision optics ... Must ... Buy.

#27 Scott in NC

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Posted 25 May 2014 - 05:02 PM

That's funny, Rob. But so true! :grin: And good idea about the TSA120. That's one that I hadn't thought of.

#28 JustaBoy

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Posted 25 May 2014 - 05:42 PM

BUT! - It doesn't come in Blue:-(

:tonofbricks:

#29 Scott in NC

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Posted 25 May 2014 - 05:55 PM

Now that is a problem. You guys know me too well, don't you? :lol: However, just to show you that I do have an open mind, the SV80L LOMO that I bought a few months ago is Pearl White. And I made an important discovery. White scopes are easier to see in the dark without inadvertently bumping into them! It's possible that the classic refractor color (white) could actually grow on me. :ubetcha:
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#30 Ken Sturrock

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Posted 25 May 2014 - 09:36 PM

EDIT: OK, I see you've decided to wait. No problem, the DM-6 will be there when you're ready...

I agree with Joe and Steve both - a 127 or 130mm fits perfectly on a DM-6!

#31 Scott in NC

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Posted 25 May 2014 - 09:39 PM

I'll have to find a good deal on a 5-incher on the used market one day, then. New is a little too pricey for my liking!

#32 Scott in NC

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Posted 25 May 2014 - 09:43 PM

EDIT: OK, I see you've decided to wait. No problem, the DM-6 will be there when you're ready...


Yep. The DM6 isn't going anywhere. And it doesn't really bother me that it may be overkill for the scopes that I currently have. I've got lighter tripods for travel use, but at home I really like rock-solid stability. And when the time comes for a larger scope, I've got plenty of room to grow. :)

Thanks for the advice--I really appreciate it.

#33 kkt

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Posted 26 May 2014 - 09:55 AM

Thanks for everyone's advice. I've come to the conclusion that I don't really need any new scopes right now. What I need is more clear skies, good health, and free time to observe! :grin: Unfortunately, none of those can be purchased. :p


Clear skies can be purchased, in the form of observing trips to the American Southwest, Chile, or Australia. Depending on how comfortably you like to travel, it could be done for less than what you'd pay for a new premium scope.

Cheers,

Patrick S.

#34 Scott in NC

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Posted 26 May 2014 - 10:07 AM

Okay, Patrick, so you got me there. :lol: What I need is the simultaneous condition of clear skies, good health, and free time to observe (at a time that doesn't interfere with my career, which is what provides the funding to continue to participate in this wonderful hobby!). :grin:

#35 Scott in NC

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Posted 27 May 2014 - 08:40 PM

The pressure is now off for me to make a decision about this scope, since it looks like it's been sold. In a way it's a big relief, though, as I wasn't really ready to decide at this moment in time. Thanks again for everyone's advice, as one day in the future I may be on the lookout for a larger refractor again. And I think that if I decide to go larger, then it would make more sense to go up to 5" rather than 4.5" (probably a 130mm f/6-7).

#36 Scott Beith

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Posted 27 May 2014 - 08:47 PM

I can verify that 3" to 4" to 5" provides solid performance increases. ;)

#37 Scott in NC

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Posted 27 May 2014 - 09:09 PM

Thanks--good to know! :)

#38 Mark Costello

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Posted 28 May 2014 - 07:37 AM

My experience in moving up from 4" to 5" is similar to Scott's, ableit with achros. Things like M1 and M51 that were a little better than detectable in 4" really show some stuff in 5"....

#39 Scott in NC

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Posted 28 May 2014 - 04:57 PM

Thanks for the advice, Mark! :)

#40 WesC

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Posted 28 May 2014 - 07:03 PM

Thanks for everyone's advice. I've come to the conclusion that I don't really need any new scopes right now. What I need is more clear skies, good health, and free time to observe! :grin: Unfortunately, none of those can be purchased. :p


I couldn't agree more... this is the problem with this hobby, if the weather is bad we take to spending money to stay involved. :lol:

#41 Mlehere

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Posted 28 May 2014 - 10:04 PM

If the SV115 is too heavy, consider the APM/TMB 115 LW. It has the same design as the SV115 and comes with the LZOS OK4 glass but is lighter than the SV115 scope. I have one and it is an outstanding 4.5" refractor. It is also supplied with test reports on the triplet.
Mike

#42 Scott in NC

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Posted 28 May 2014 - 10:26 PM

Thanks, Mike. That sounds like a good option to consider for the future. Do you recall how much the APM/TMB 115 f/7 LW weighs?

#43 nicknacknock

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Posted 29 May 2014 - 04:09 AM

http://www.apm-apo.c...15_805-lw_e.htm

14.19 lbs

#44 Scott in NC

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Posted 29 May 2014 - 02:09 PM

Thanks for the info, Nick. It sounds like the APM version is a nice alternative, especially since that one is still being produced, and the SV115 TMB/LZOS is not. But now that we're getting into lighter weight territory, maybe I really should be looking at a 130mm triplet instead! :grin:

#45 Scott in NC

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Posted 29 May 2014 - 02:15 PM

Hmm...the APM 130/780 LW apo triplet with LZOS lens and 2" FT only weighs 15.4 lbs.

#46 JustaBoy

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Posted 29 May 2014 - 02:19 PM

I was thinking that the 130/1200 would be just right for me, but then I'm pretty tall:-)


It's Fun to Dream... <sigh>

#47 nicknacknock

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Posted 30 May 2014 - 03:33 AM

Well, the APM has slightly less focal length than the Stellarvue so you are not giving any Field of View (getting about 3.25 degrees TFOV with a Nag 31). 28% more light gathering won't hurt at all as well.

Look, both are great scopes and your mount can handle them so if budget is not a constraint and you are comfortable with the weight difference (130mm of course being heavier), aperture wins here...

#48 photoracer18

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Posted 30 July 2014 - 11:15 PM

I bought the blue anodized one that Richard Tennies was selling. Until I saw some of the posts from 2007 on the Stellarvue website I did not realize that the blue non-Stardust anodized ones were that rare. Funny I never asked Vic about that during all the time I worked for Gary Hand. I bought a used SV-110ED less than 2 weeks before this one came up.

#49 WesC

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Posted 31 July 2014 - 12:50 AM

If I was buying a 5" scope it would be either a TV-127is, a TOA-130 or a TEC-140!

#50 Scott in NC

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Posted 04 August 2014 - 07:22 AM

I thought I'd post some follow-up for everyone.  I ultimately decided that a 4.5" apo triplet was not what I really wanted.  I bought a Tak FS-102 fluorite doublet instead and couldn't be happier with my decision! :jump:




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