Revelation astro collimator battery?

[Swillis]

Hi,

I have just purchased by first scope from eBay and received lots of extras with it. One of these is a revelation astro laser collimator, with no battery and no indication of what size battery it takes. Does anyone on here know what size it takes? My best guess is a 1/2AAA but I could spend ages guessing and buying batteries to test. 

I will try and add some photos tonight. 

Thanks for the help

Simon

[Waldemar]

Probably 3V Litium batteries CR 123

 

[Swillis]

Hi,

Thanks for the suggestion. I just found 3 LR44 batteries in the bottom of the box. 

Cheers!

[Ricochet]

11 minutes ago, Swillis said:

Hi,

Thanks for the suggestion. I just found 3 LR44 batteries in the bottom of the box. 

Cheers!

+ side is up towards the on/off switch. 

Also, it is a good idea to check the collimation of the collimator and/or only use it for barlowed laser collimation of the primary. 

Edited June 24, 2019 by Ricochet

[Swillis]

18 hours ago, Ricochet said:

+ side is up towards the on/off switch. 

Also, it is a good idea to check the collimation of the collimator and/or only use it for barlowed laser collimation of the primary. 

I had read that it needed collimating itself. Looks like a job for this evening. 

Thanks

[RT65CB-SWL]

20 minutes ago, Swillis said:

I had read that it needed collimating itself. Looks like a job for this evening. 

Thanks

This video may/will help ---> 

...or this one --->

 

Edited June 25, 2019 by Philip R

[Ricochet]

52 minutes ago, Swillis said:

I had read that it needed collimating itself. Looks like a job for this evening. 

Thanks

If you do need to collimate it you should back off all three collimation screws a bit first. The screws push against the thin tube that holds the batteries, if you tighten one without loosening the other(s) you will just crush the tube. 

Place the collimator in your v block and rotate it until the dot is at the bottom of the circle it draws. Tighten up the top most screw a touch. Repeat until it stays in the same place. You will probably find that you only use two screws to change the collimation so the last thing to do is to tighten the other screw to lock it in place. 

[Swillis]

@Philip R @Ricochet thanks for the help. I have everything collimated now👍

 

[Ricochet]

Well done. Now you just have to wait for the clouds to clear so you can try your new scope.