Celestron 25X100 for DSO?

[pluton]

Hello,
I have the opportunity to acquire at a good price a Skymaster 25X100 .but I doubt it, since for DSO observation perhaps the 25X100 not capture much light of galaxies,nebulas...
I also think that maybe., to carry straight eyepieces, are uncomfortable for more than 50 or 60 degrees of altitude.
The truth, on the other hand, I have read very good reports of this binocular, including the "wow" feeling that some say, by observing objects like M42, M31 or double cumulus Perseus , by some amateurs who say prefer 25X100, a Dobson telescope of 6 or 8 "..., for DSO
I would like to know your opinions and experiences in this regard.
Thank you very much
Best
paul

[RichM63]

You'll need to get a half decent tripod as well. There's no way you could hand hold 25x100 binoculars.

As for DSO observation they should be great My smaller 20x80 certainly are.

A reclining observation chair will also help.

[Astro_noob]

Don't be fooled by advertising and peoples opinions, a good 6-8" newtonian will resolve a lot more detail than a 25x100 binocular. In addition the scope can be used to view a wider variety of items in more detail dependant on the eyepieces used. A binocular is of course more portable and requires less setup time. The 3d effect of using 2 eyes can help to increase the viewing experience but is no match for a telescopes ability to resolve greater detail. Most owners of decent quality binoculars also own decent quality telescopes as the two items are for different purposes.

If the binocular is a good price and collimated correctly buy it and enjoy. If you really enjoy them but want to progress buy a telescope later.

[pluton]

Thank you very much All opinions!!

Best regards

Paul

[Lowjiber]

Resolution is a function of diameter.  That's why "aperture rules".

[deepspacehunter]

My 25 x 100s are great on DSOs , of course they are no match for my 12" DOB, but I sure do love those giant binoculars, especially  outstanding on comets as well.

Mark

[dezzie]

I just sold my 25x100 quantum 4s, fantastic widefield views, great views of m42, orion, Andromeda etc etc, but I had a P mount specially built, and as great as they were, the straight through eyepieces and bulky set up needed which I needed help with coupled with a knackered back it had to go, I just want an ed80 apo and tripod and I will be happy with my lot now!

[neural]

Resolution is a function of diameter.  That's why "aperture rules".

Well, that's true when your exit pupil is less than 1-2mm. If the OP can resolve 150 arcsec on his retina, he'll be able to resolve 150/25 = 6" at 25x. The Dawes limit of a 100mm aperture is about 1.2". The upshot as I understand it is that telescope resolution is usually limited by aperture, but binoculars usually by magnification.

Of course, there are other issues: light grasp (bigger aperture always better, I acknowledge), but also true field of view (binocs usually better) if galaxies and nebulae are the targets. 

As I have very little personal experience of DSOs I'll be quiet now.

[mdstuart]

I love my 25 x 100 mm bins but as others say without a parallelogram mount they are best from 20 to 60 deg elevation.

But they give good moon views that have a 3D effect that a scope cannot match IMHO...

They show clusters like Pleiades etc really well.

The view is down to mag 10 and is very similar to a low power eyepiece on a 5 inch reflector but of course you can use both eyes.

So for the brightest DSOs and clusters they are fine but if you want to look at planets, split tight doubles or look for non messier galaxies then a scope is the way to go. 

Mark

[denis0007dl]

I had TS 25x100 and it was very good for DSOs. On daytime observing it was horrible IMO, because lots of colour abberations. Celestron model have tighter eye releaf, but it is lighter.