daslolo

17 hours ago, Geoff Lister said:

I wondered the same, so I have just tried my binoviewer and a pair of Celestron 32mm Plossls in my SS60. Yes, it is possible to use  a binoviewer, but:-

(1) I could not achieve focus with the binoviewer in the 90 degree diagonal.

(2) Without the diagonal, the EP position means you are looking directly towards the Sun, instead of downwards. I found the (now, upwards at about 20-ish degrees, and worse in the summer) viewing position, literally, a pain-in-the-neck, even with a range of viewing chairs/stools.

(3) It was very difficult to get the exit pupils aligned, so most of the time I only had an image in 1 eye.

Others may have a more friendly setup but it did not work for me. I will stick with 1 eye + floaters.

Geoff

Thanks for trying this out.

(1) Binos are tricky and the scout looks like it would have a limited back focus. I spoke with the people at Daystar about binos and they told me the Denk and the Teleview work with the scout. My guess is the Denk works because of the power thingy which is a barlow so give it a try with the smallest magnification barlow you have. When I had a PST I needed a 1.85 barlow in the nose of the Astromania binos (the high end).

(2) the good thing is UK sun is hardly a danger  

(3) is very hard to get right. The thing that made me abandon mod is just that, and when my eyes gymnastic would somehow get both eyes working then it'd be like peeping through a keyhole (not that I would know what it is like)

Hello,

I am a big fan of binoviewers but I don't understand why the view in them is like a keyhole.

And depending on the barlow it can get so bad that the brain can't merge, one image shows up and the other doesn't

Can someone explain and ... how do I get the most out of them?

Also if you have experience with Quark, that would help make a choice.

On 15/12/2019 at 07:32, Highburymark said:

through 4” frac the views are breathtaking. 

alright, that's all I wanted to know

Anyone using binos on the scout? The quark? My PST one eyed is awful, two eyes it's hypnotic so at least I know that side of the optical train.

On 23/02/2020 at 06:57, vineyard said:

 

I've seen this cellular structure before, it's an image processing artifact, what settings were you using?

That's impressive image processing!

How does it look in the eyepiece?

On 15/01/2020 at 15:17, Peter Drew said:

My experience has been that larger blocking filters only enlarge the field of view, they don't increase the "sweet spot" of good Ha on band performance, this is determined by etalon diameter and focal length of the telescope.  I have 5mm, 10mm and two 15mm blocking filters, the 5mm gives the best image in conjunction with a 2x Barlow and binoviewers at a minimum magnification of 150x on my 150mm solar refractor.     🙂

My experience too with the 5mm bf of the stock PST and 1.85x barlow in binos, large field of view. i don't understand why you wouldn't gain afov with a larger bf (all them acronyms)

On 17/08/2017 at 05:09, DRT said:

2" Baader UV/IR Cut filter.

Is it this filter ? https://www.amazon.com/dp/B0028LSMR2/ref=cm_sw_em_r_mt_dp_U_TX7uEbC9EFJFF

has anyone tried that moon filter? It has a long leg past 1000nm

https://www.amazon.com/dp/B005POM8GU/ref=cm_sw_em_r_mt_dp_U_WC5uEb6ZR6CFJ

20 hours ago, Solar B said:

It's probably a little early yet given the weather here , perhaps around May 🙄

What may i ask are you doing with the PST etalon ?

Brian 

Oh I know what you mean, we have similar weather here in Washington state.

I am disassembling the PST to see how it works.

how do you like the Scout after a month?

The lx65 is a great concept and the optic is fab but some units are very buggy so you end up with goto that goes under the horizon or above the maximum elevation, denting the case and stressing the gears, also some have mechanical problems (I got all the above, someone else none) so buy it from a vendor that does return.

The ES82 are amazing

No beans, true wide field of view that's not sensitive to eye position, very bright, how do they do it that others don't?!

7 hours ago, John said:

The ES 92's are rather nice but also rather large and heavy !. The 17mm is the heaviest eyepiece that I currently own at 2.87 lbs / 1.3 kg:

 

11.5# for the 9" OTA, 3# for the eyepiece, 0.5# for the diagonal and 2" tube = 15# with a capacity of 14# on the main, this mount is going to love me 😁

I won't spend $500 on an eyepiece so instead I spent $300 on the 82 degree 18mm version, let's see if I like it

On 28/07/2010 at 12:51, NickH said:

but you can mod a PST to much bigger aperture easily...

look what Stu did with his LS35! 🤯 and he didn't need to tear apart his scope

https://solarchatforum.com/viewtopic.php?f=9&t=11271&p=112624&hilit=Lunt35+mod#p111990

16 hours ago, Louis D said:

12mm and 17mm ES-92s which completely lack SAEP. 😄

We are promised clear sky on tuesday, I'll see if my pupils dilate enough.

92 degrees with no beans! that's amazing, and I see priced accordingly 🙈

23 hours ago, Stu said:

I made eye guard extensions for Celestronn Omni Plossls from hobby foam and insulating tape which works very well. They are adjustable up and down, but actually don't need to be too high to allow you to feel where they are enough to keep you eye positioning correct.

 

Is nice, I'll try that with my binos.

My eyes won't line up on this pair of celestron you have, same deal with the linears but the eyes work fine with astromania binos with included 33mm though ... I need to collimate my eyeballs, if only I could fine my M1 screwdriver

7 hours ago, Ruud said:

Oh yes, a longer eyecup giving tactile feedback would certainly help. It would help you keep your eye still in the right position for all light to get in.

A wide pupil also helps. For this reason, eyepieces that have spherical aberration of the exit pupil (SAEP a messy exit pupil like in the kidney bean animation) are generally poor for daytime usage.

The larger the exit pupil, the more of a problem SAEP becomes. I have a short focus eyepiece with SAEP (original Nagler 4.8mm) that never causes kidney beaning because its exit pupil is so small.

Gotcha and small exit pupil = less light output, right? So if I understand, for someone who wants to observe faint objects, the longer eyecup and wide exit pupil like this beany Meade eyepiece is the best option.

I googled around for 20mm eyecups but didn't find anything. Do you have a source? 

These have the perfect length: https://www.amazon.com/gp/product/B07MJ9GS91/ref=ppx_yo_dt_b_asin_title_o08_s00?ie=UTF8&psc=1

On 25/01/2018 at 13:40, Ruud said:

Kidney beaning or blackout? The first is rare in modern designs.

Animated diagrams! So nice!

It looks like a result of the eyepiece design, is there a thing I can do besides a longer eyecup to get feedback?  I am getting severe kidney beaning with very wide AFOV eyepice (Meade 607018, 100 Degree, MWA 21MM, 2-Inch).