SkyMaster colimation help needed

Discuss binoculars.
Post Reply
Geko
Earth Ambassador
Articles: 0
Offline
Posts: 2
Joined: Thu Apr 02, 2020 1:16 pm
4
Location: Europe
Status:
Offline

SkyMaster colimation help needed

#1

Post by Geko »


I am trying to collimate some brand new Celestron SkyMaster 25x100 binoculars, but although I found the adjustment screws, I could find no explanation on which one is for adjustment, and which is a holding screw. Can someone please explain each of the 5 screws on this picture and the correct order/procedure for adjustment? This is the right hand side:
Attachments
Skymaster25x100.jpg
User avatar
Lady Fraktor Slovakia
Universal Ambassador
Articles: 0
Offline
Posts: 9965
Joined: Mon Apr 29, 2019 9:14 pm
4
Location: Slovakia
Status:
Offline

Re: SkyMaster colimation help needed

#2

Post by Lady Fraktor »


I would try with one set first, for example 4/5.
Loosen one of them 1/8 of a turn, tighten the other 1/8 of a turn.
This should move them enough to see if it is the direction you need up/ down, left/ right.
Gabrielle
See Far Sticks: Elita 103/1575, AOM FLT 105/1000, Bresser 127/1200 BV, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS 100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, SXP2, AXJ, AXD
Az/Alt: AYO Digi II, Stellarvue M2C, Argo Navis encoders on both
Tripods: Berlebach Planet (2), Uni 28 Astro, Report 372, TAL factory maple, Vixen ASG-CB90, Vixen AXD-TR102
Diagonals: Astro-Physics, Baader Amici, Baader Herschel, iStar Blue, Stellarvue DX, Tak prism, TAL, Vixen
Eyepieces: Antares to Zeiss (1011110)
The only culture I have is from yogurt
Image
Geko
Earth Ambassador
Articles: 0
Offline
Posts: 2
Joined: Thu Apr 02, 2020 1:16 pm
4
Location: Europe
Status:
Offline

Re: SkyMaster colimation help needed

#3

Post by Geko »


Thanks. I am not sure they work by loosening one and tightening the other... On these binoculars from each of the two pairs (2/3 and 4/5) one screw is completely lose, and the other is fully tightened from the factory.
Rick2057
Earth Ambassador
Articles: 0
Offline
Posts: 14
Joined: Fri May 29, 2020 10:24 pm
3
Location: Chester, UK
Status:
Offline

Re: SkyMaster colimation help needed

#4

Post by Rick2057 »


Please forgive me if this is a complete waste of time and turns out to be a red herring.
I have a pair of Skymaster 15x70's that became unusable four years ago shortly after I'd bought them. I assumed the "damage" was beyond economic repair. I read about how to collimate them here
and they are perfect now. Cant believe how good they are.
User avatar
John Baars Netherlands
Co-Administrator
Co-Administrator
Articles: 5
Offline
Posts: 2744
Joined: Sat May 11, 2019 9:00 am
4
Location: Schiedam, Netherlands
Status:
Offline

TSS Awards Badges

TSS Photo of the Day

Re: SkyMaster colimation help needed

#5

Post by John Baars »


The collimation system of post #4 is quite a different one from the one showed in post#1

Like Lady Fraktor implies the system in post#1 is a system that works with push-pull screws. 2 & 3 form a pair and 4 &5 too.
Like her I would start with 4 &5 too.
If one of them is loose, it is bad news. You know now why the prism is out of collimation, the loose one should have been tightened. Push and pull screws work always as a pair.
It may take some time to fully master the movements the prismblock makes, but remember this thought: they were collimated when the binoculars were manufactured. And can be brought back in that condition. No panic needed.
Refractors in frequency of use : *SW Evostar 120ED F/7.5 (all round ), * Vixen 102ED F/9 (vintage), both on Vixen GPDX.
GrabnGo on Alt/AZ : *SW Startravel 102 F/5 refractor( widefield, Sun, push-to), *OMC140 Maksutov F/14.3 ( planets).
Most used Eyepieces: *Panoptic 24, *Morpheus 14, *Leica ASPH zoom, *Zeiss barlow, *Pentax XO5.
Commonly used bino's : *Jena 10X50 , * Canon 10X30 IS, *Swarovski Habicht 7X42, * Celestron 15X70, *Kasai 2.3X40
Rijswijk Public Observatory: * Astro-Physics Starfire 130 f/8, * 6 inch Newton, * C9.25, * Meade 14 inch LX600 ACF, *Lunt.
Amateur astronomer since 1970.
User avatar
pakarinen United States of America
Inter-Galactic Ambassador
Articles: 0
Offline
Posts: 4029
Joined: Fri Jun 14, 2019 3:33 pm
4
Location: NE Illinois
Status:
Offline

TSS Awards Badges

Re: SkyMaster colimation help needed

#6

Post by pakarinen »


I was never able to successfully collimate my 15x70s even with directions off the Web, at least not as far as "close enough" collimation. Good luck!
=============================================================================
I drink tea, I read books, I look at stars when I'm not cursing clouds. It's what I do.
=============================================================================
AT50, AT72EDII, ST80, ST102; Scopetech Zero, AZ-GTi, AZ Pronto; Innorel RT90C, Oberwerk 5000; Orion Giantview 15x70s, Vortex 8x42s, Navy surplus 7x50s, Nikon 10x50s
Post Reply

Create an account or sign in to join the discussion

You need to be a member in order to post a reply

Create an account

Not a member? register to join our community
Members can start their own topics & subscribe to topics
It’s free and only takes a minute

Register

Sign in

Return to “Binoculars”