60 replies to this topic

[Anthony236J]

When I was looking for a 5-6" refractor, I found it helpful seeing size comparison photos that included telescopes similar in size to ones that I had already owned. I'd like to contribute back with my own size comparison photo in case others are considering telescopes similar in size.

 

If you have comparison photos of your own, I would be interested in seeing them (and perhaps others might too).

 

Below is the Borg 55FL operating at ~f/6, the AT102EDL f/7 and the SVX127D f/8, all aligned at the end of the focuser drawtube (the photo perspective causes them to seem offset).

 

Dew shields retracted, with a 4x6 photograph for reference:

 

 

 

Dew shields extended:

 

 

 

The Borg 55FL at f/4.5 with my old WO Megrez 72FD at f/6:

 

 

Edited by Anthony236J, 18 March 2025 - 02:11 PM.

[ris242]

When I was looking for a 5-6" refractor, I found it helpful seeing size comparison photos that included telescopes similar in size to ones that I had already owned. I'd like to contribute back with my own size comparison photo in case others are considering telescopes similar in size.

 

If you have comparison photos of your own, I would be interested in seeing them (and perhaps others might too).

 

Below is the Borg 55FL operating at ~f/6, the AT102EDL f/7 and the SVX127D f/8, all aligned at the end of the focuser drawtube (the photo perspective causes them to seem offset).

 

Get someone to hold the 127D........then it looks even bigger.

[PKDfan]

Lol Anthony at first i didn't even see the little Borg ! Its so small !

I'll post my 4 little refractors later in another post.


CSS
Lance

[vrodriguez2324]

Get someone to hold the 127D........then it looks even bigger.

Yes. Or include something else in the picture for scale, a pet perhaps. How big are the floor planks? 2"x24", 4"x48", or 8"x96" ! 

[vrodriguez2324]

Lol Anthony at first i didn't even see the little Borg ! Its so small !

I'll post my 4 little refractors later in another post.


CSS
Lance

Please do. "Here comes the Evolux rounding the bases"

 

Victor

Edited by vrodriguez2324, 17 March 2025 - 10:19 PM.

[vrodriguez2324]

AT102ED

60mm f/7

GSO 8x50 RACI

Attached Thumbnails

• 

[plyscope]

Here is a comparison of a TSA120 and a FS152.

 

 

 

[Wildetelescope]

 

 

Bottom up

AP 152mm F9 Starfire.  1.4 meters long for scale.

AP 127 mm F8 Starfire

30 mm Focal zoom spotting scope

TV102

and shoved in the back on the top shelf is an 80 mm F15 Towa

 

I need to put in my TMB 105 and my Sky 90 in there some how and get that shot.  

 

Cheers!

 

JMD

[Joe Bergeron]

Askar 120mm apo

Astro-Physics Stowaway 

Astro-Tech 72mm EDII

Attached Thumbnails

• 

[GolgafrinchanB]

Ya'll rock, and you're saving me $$$. When I hear 100mm refractor, I think "that's only an inch bigger than my AT72EDII" and feel tempted for the better views. Then I view these photos and you know what, I like my 72 a lot more now! As far as I'm concerned keep these photos coming. You're helping tons of refractor newbies like me be realistic about sizes!

[Yuri]

Here is a sketch of size comparison for refractors from 110mm to 300mm: 

[tcifani]

It would be interesting to list the weights of each scope as well, although these would be easy to look up.

[Highburymark]

Great idea for a thread - very useful for those considering a larger refractor. Here’s my TSA-120 next to a TV85 (with Solarscope etalons and blocking filter, so looks very long), Tecnosky F/6 60ED, and a random Tak Epsilon 130d, which should know better than to sneak into the refractor forum.

Attached Thumbnails

• 

[fedele]

i like this topic

Attached Thumbnails

• 
• 

[fedele]

v

Attached Thumbnails

• 

[Highburymark]

For reference, the TSA is 6.7kg - just over 14lb - about as light and compact as an F/7.5 triplet gets with 120mm aperture.

[25585]

Weight is an important factor. The additional weight of a triplet or quad, especially as apertures go over 4", should not be discounted.

[fedele]

j

Attached Thumbnails

• 

[Erik Bakker]

 

Three classic fluorite doublets: 70mm f/8 (white tube), 55mm f/8 and 102mm f/8.8 (black tubes).

[Erik Bakker]

 

FL70 S f/8 fluorite and 7" f/16 Questar 7.

[PawPaw]

Nikon 10cm ED Apo F/12 (ED100)

Nikon 6.5cm Achromat F/12 (S65)

Attached Thumbnails

• 
• 

Edited by PawPaw, 18 March 2025 - 08:32 AM.

[Lookitup]

SM 125ED and Tak 100DF. 

Attached Thumbnails

• 

[fedele]

f

Attached Thumbnails

• 
• 

[alceo]

From left to right, Lunt 60 H alfa, Vixen ED80Sf, Takahashi TSA120, Takahashi FC100DC, Takahashi FOA60, classic Alstar 60 f15.

Attached Thumbnails

• 

Edited by alceo, 18 March 2025 - 11:04 AM.

[Martinbruce]

Well here are my scopes. First is a StellaMaria 125ED f7.8 doublet in CF that weight just 12.8lbs. Middle is a AT115EDT f7 triplet that weighs 13lbs + and lastly is a ES ED 102 Essential Series weighing in at 12lbs but seems lighter. 

Attached Thumbnails

•