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Favorite scopes for doubles

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#1 Bigzmey

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Posted 27 August 2021 - 02:06 PM

Reading observing reports it seems that most of binary enthusiasts using refractors, in particular of APO/ED variety, and for a good reason.

 

My favorite tool for last several years has been Stellarvue 102mm ED doublet, and before that Explorer Scientific 127mm APO triplet. Moving forward I will still rely on the SV 102ED but will deploy 9.25" EdgeHD SCT to split tight and uneven double beyond SV 102ED reach.

 

Here is my new setup 

 

Edge-SV102.jpg    

 

 

I am curious what are your favorite scopes for doubles. Do share. :)


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#2 havasman

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Posted 27 August 2021 - 02:14 PM

16" f4.49 Starmaster


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#3 jeremiah2229

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Posted 27 August 2021 - 02:17 PM

I always grab the 150mm Mak. I can scoot around the yard easily with it and it is easy to get some magnification when needed.

 

 

Peace...


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#4 river-z

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Posted 28 August 2021 - 02:44 PM

12" Dob (Meade Lightbridge).  The light pollution sucks here in LA but the seeing is often good and that means I can sometimes get splits less than an arc second.  Good times.


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#5 Bigzmey

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Posted 28 August 2021 - 08:26 PM

Interesting. Three replies and no fracs yet. :)



#6 barbie

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Posted 28 August 2021 - 08:48 PM

90mm F14 Maksutov.


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#7 Jon Isaacs

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Posted 29 August 2021 - 02:57 AM

Interesting. Three replies and no fracs yet. smile.gif

 

I enjoy doubles in all my scopes, there's a great variety of doubles so I can find challenging doubles, easy doubles, beautiful doubles, unique doubles all appropriate for every scope I own. 

 

Splitting Porrima in my 50 mm Astro-Tech RACI finder is great fun. Castor is great as is gamma And. My 4 inch TeleVue is a nice doubles scope. My William Optics 80 mm F/7 is a nice doubles scope.

 

But my favorite is my 13.1 inch F/5.5 Starsplitter Dob. It's stationed in San Diego near the ocean where the seeing can be 1/2 arc-second or better and it has the shear resolving power to take advantage of such stable seeing.  It has a Robert Royce mirror so once it's cooled down, it provides some beautiful images. I've split doubles under 1/2" with it. This evening I was observing theta CRB, it's the topic of another thread. Mag 4.27-6.29 at 0.8". At 600x, it was a picture perfect wide split.

 

6446676-Birthday Dob CN.jpg
 
Jon

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#8 Voyager 3

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Posted 29 August 2021 - 07:51 AM

Be sure to tie the scope safely to the ground !
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#9 Bigzmey

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Posted 29 August 2021 - 12:12 PM

 

I enjoy doubles in all my scopes, there's a great variety of doubles so I can find challenging doubles, easy doubles, beautiful doubles, unique doubles all appropriate for every scope I own. 

 

Splitting Porrima in my 50 mm Astro-Tech RACI finder is great fun. Castor is great as is gamma And. My 4 inch TeleVue is a nice doubles scope. My William Optics 80 mm F/7 is a nice doubles scope.

 

But my favorite is my 13.1 inch F/5.5 Starsplitter Dob. It's stationed in San Diego near the ocean where the seeing can be 1/2 arc-second or better and it has the shear resolving power to take advantage of such stable seeing.  It has a Robert Royce mirror so once it's cooled down, it provides some beautiful images. I've split doubles under 1/2" with it. This evening I was observing theta CRB, it's the topic of another thread. Mag 4.27-6.29 at 0.8". At 600x, it was a picture perfect wide split.

 

 
 
Jon

 

Beautiful scope Jon! I used to live on the coast but recently moved in land. I have more clear nights and slightly darker skies now, but the seeing never gets as good as on the coast.



#10 Jon Isaacs

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Posted 29 August 2021 - 12:29 PM

Beautiful scope Jon! I used to live on the coast but recently moved in land. I have more clear nights and slightly darker skies now, but the seeing never gets as good as on the coast.

 

Thank you. It was a lucky deal, it's been a good scope..

 

I'm fortunate in that we have two places, one in Clairemont and one in Boulevard. Clairemont has the good seeing, Boulevard has the darker skies. I typically spend most of the time between the third quarter moon and the first quarter moon in Boulevard and the rest in San Diego/Clairemont.

 

This coming new moon period is up in the air because my truck is in the shop getting the transmission rebuilt.

 

I'm looking at your photo, nice setup with a nice view of the mountains. I'm trying to guess where you are. I'm guessing you're looking to east, maybe Ramona?

 

Jon


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#11 Bigzmey

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Posted 29 August 2021 - 01:21 PM

Thank you. It was a lucky deal, it's been a good scope..

 

I'm fortunate in that we have two places, one in Clairemont and one in Boulevard. Clairemont has the good seeing, Boulevard has the darker skies. I typically spend most of the time between the third quarter moon and the first quarter moon in Boulevard and the rest in San Diego/Clairemont.

 

This coming new moon period is up in the air because my truck is in the shop getting the transmission rebuilt.

 

I'm looking at your photo, nice setup with a nice view of the mountains. I'm trying to guess where you are. I'm guessing you're looking to east, maybe Ramona?

 

Jon

This is a nice arrangement. I was considering a second property in the desert but settled for the next best thing:  

 

The photo was taken at the Anza dark site of the Orange County Astronomers club. I have been a member for a few years and  go there  mostly to hunt galaxies, but on occasion doubles. The sky is Bortle 3-4


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#12 Jacques

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Posted 29 August 2021 - 02:34 PM

I really appreciate my refractors for double stars. Their excellent image quality helps...and the fact that I don't have any other kind of scope wink.gif


Edited by Jacques, 29 August 2021 - 02:35 PM.

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#13 Jon Isaacs

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Posted 29 August 2021 - 03:06 PM

This is a nice arrangement. I was considering a second property in the desert but settled for the next best thing:  

 

The photo was taken at the Anza dark site of the Orange County Astronomers club. I have been a member for a few years and  go there  mostly to hunt galaxies, but on occasion doubles. The sky is Bortle 3-4

 

I tried to find out where the OCA Anza site is located, no luck. My nephew lives in Lake Riverside Estates which is near Anza.

 

Jon



#14 dhkaiser

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Posted 29 August 2021 - 04:13 PM

What little double star observing I have been able to do this year, I would say my Lunt 102ED refractor is my favorite. 

My 150mm C6 just doesn't perform as sharp.  Haven't had a good night recently to work on collimation the C6 so

I'm hoping it will perform better.


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#15 Spikey131

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Posted 30 August 2021 - 06:34 AM

Reading observing reports it seems that most of binary enthusiasts using refractors, in particular of APO/ED variety, and for a good reason.

 

My favorite tool for last several years has been Stellarvue 102mm ED doublet, and before that Explorer Scientific 127mm APO triplet. Moving forward I will still rely on the SV 102ED but will deploy 9.25" EdgeHD SCT to split tight and uneven double beyond SV 102ED reach.

 

Here is my new setup 

 

attachicon.gifEdge-SV102.jpg   

 

 

I am curious what are your favorite scopes for doubles. Do share. smile.gif

Great minds think alikegrin.gif .

 

Mine is a C8 and NP101 on the iOptron AZ Mount Pro.  They really do complement each other for splitting doubles, each showing their strengths in different areas.

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#16 Bigzmey

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Posted 30 August 2021 - 11:08 AM

Great minds think alikegrin.gif .

 

Mine is a C8 and NP101 on the iOptron AZ Mount Pro.  They really do complement each other for splitting doubles, each showing their strengths in different areas.

Nice! They really do, aren't they? :D I prefer manual mounts, but under full Moon from my home location you can hardly see any stars to navigate, so I just picked iOptron AZ Mount Pro, but did not have a chance to do a double session with it yet.



#17 Oscar56

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Posted 31 August 2021 - 10:04 AM

Smoky skies for much of this summer motivated me to begin observing doubles.  I will concentrate my observing with my TeleVue NP101.


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#18 PawPaw

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Posted 31 August 2021 - 02:31 PM

I have two favorites but after last night I know have three.  First my dual Goto's...80mm semi-apo's.   Second my 100mm Goto.

 

Don

 

 

 

 

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#19 Bigzmey

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Posted 31 August 2021 - 05:59 PM

I have two favorites but after last night I know have three.  First my dual Goto's...80mm semi-apo's.   Second my 100mm Goto.

 

Don

Why dual 80mm? They seem far apart for bino setup.



#20 Illinois

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Posted 01 September 2021 - 05:52 AM

I like my Orion 100 ED 900mm. I can see double double stars in Lyra at only 102 power (8.8mm eyepiece) Tight pinpoint stars better than my old 6 inch reflector and C8!  100 ED is great grab and go to look at stars in early morning! 


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#21 PawPaw

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Posted 01 September 2021 - 08:29 AM

Why dual 80mm? They seem far apart for bino setup.

I have them paired up so my partner can view at the same time.  It really makes observing doubles fun.

 

Don


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#22 Bigzmey

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Posted 01 September 2021 - 11:51 AM

I have them paired up so my partner can view at the same time.  It really makes observing doubles fun.

 

Don

Great idea!



#23 Voyager 3

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Posted 01 September 2021 - 12:10 PM

I have them paired up so my partner can view at the same time. It really makes observing doubles fun.

Don

Now that is the real double !!
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#24 JimP

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Posted 03 September 2021 - 08:39 AM

My AP 155 F/7, AP 130 F/8.35 and my TMB (LZOS) 8” F/9 Apo refractors are my favorites.

 

JimP

 

 



#25 JimP

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Posted 03 September 2021 - 08:48 AM

7317E147-1977-450E-8332-19E9057C25E4.jpeg Here is my TMB 8” F/9. AP 130 F/8.35 in the background. 

 

JimP

 

 

 

 


Edited by JimP, 03 September 2021 - 08:56 AM.

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