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Anyone using an 200mm f/4 Nikkor lens with their MOD3C?

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#1 nimitz69

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Posted 01 December 2019 - 09:13 AM

I have a f/2.8 135mm that works great but I wanted to add a 200mm and was wondering if the f/4 is really fast enough?  anyone using this lens with their MOD3C?

 



#2 Mazerski

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Posted 01 December 2019 - 09:20 AM

I live on edge of white zone in area between Baltimore and DC.

The 135 you have is a nice lens — I have the f/2.8 180mm for emission Nebula and

the 200mm f/4 for clusters, globs and galaxies — nice lens for $50 and its not heavy... about the same weight as the 135.

 

I use lenses with Mod3 and PVS7.


Edited by Mazerski, 01 December 2019 - 09:21 AM.


#3 nimitz69

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Posted 01 December 2019 - 07:09 PM

Yeah, when I saw how cheap the 200mm f/4 were I almost just bought it without checking



#4 Eddgie

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Posted 02 December 2019 - 01:08 PM

I have not used the lens in question, but I have used Nikon mount 80mm to 210mm f/4.5 zoom and while I doubt that the lens quality was as good as a Nikkor, it was still a useful lens and much lighter than my 80mm-200mm f/2.8, which is a lens I don't use much due to the weight. 

 

At f/4 you can still see a lot of brighter nebula, but of course the result will not be as good as using f/2.8, but for general use, such as wide field views of rich star regions or larger clusters, 200mm is a great focal length range. 

 

I too use the Nikon 180ED f/2.8, but because you already have a 135, this is kind of a small step and instead, you too might prefer a zoom like the 80mm-210mm that I have.   These will be a tiny bit slower, but the difference between f/4 and f/4.5 is very hard to see. 

 

I do not though have experience with the lens you asked about, but I do recommend something in the 200mm to 210mm range for hand held general observing, like dark lane tracing along the Milky Way. 

 

And here is the great thing about these lenses.. You an often buy them used for less than a Televue Plossl.  


Edited by Eddgie, 02 December 2019 - 01:10 PM.


#5 nimitz69

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Posted 02 December 2019 - 06:14 PM

Thx. I just bought one so we’ll see, at $50 its hard to go wrong ...



#6 Eddgie

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Posted 03 December 2019 - 02:07 PM

Thx. I just bought one so we’ll see, at $50 its hard to go wrong ...

Yeah..  Less than the cost of a Televue Plossl. 

 

I think f/4 fine for for brighter nebula and stellar targets. It won't have the limiting magnitude reach as an f/2 lens but it will be light and handy while an f/2 lens really needs to have a mount. 

 

For hand holding, 200mm only makes sense if the lens is slower because it can be tiring to hand hold even my 180mm f/2.8.  Past that and I would hardly ever use it, but I do use the 180ED lens a lot.

 

For looking around the hood, the f/4.5 80mm to 210m zoom is quite excellent.  I live in central Austin (about 4 miles from city center) and there is more than enough ambient light to see well down the street (no street lights, just ambient house light) and see coyotes, cats (which I call coyote kibble), possums and raccoons, and being able to zoom out and zoom in is very handy.  I highly recommend one of these for non-astronomy use.  Again, I think this lens can be bought used for less than $40.   Way fun.  Why wouldn't someone with a C mount want to own a zoom for non-Atro use?  So cheap.  

 

70-210.jpg


Edited by Eddgie, 03 December 2019 - 02:17 PM.

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#7 nimitz69

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Posted 03 December 2019 - 08:05 PM

yeah cool idea. I’ll go look for one of the as well.  I don’t even use my 135 handheld much.  It’s so easy to pop on to my tripod  that that’s how I usually observe with it.  Moving around is no issue since I just pickup the tripod.  I’ll be doing the same thing with the 200mm for sure



#8 Peregrinatum

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Posted 03 December 2019 - 09:38 PM

Just picked one up for viewing the hood, $34 on Evilbay... thanks for posting this!




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