Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

stargazine_ep28_banner.thumb.jpg.b94278254f44dd38f3f7ee896fe45525.jpg

Celeste

Oh dear...2nd attempt with our scope

Recommended Posts

Well, after watching metcheck for the last week, and watching Tuesday (no cloud) we decided to put the scope up out the back. Being as this is only the 2nd time I have tried polar aligning I wasn't expecting to get it perfect, but close. OMG I was way out :D First up I balanced the mount using the bubble in the mount, then I used the GPS module and that set the time/date/location, then I tried 3 star align after what I thought was polar aligned and the scope was out a touch, I centered what I assumed to be the named star, went to the 2nd centered and so on. Alignment succesful! came the reply....erm no lol...on sending the scope to Jupiter...it went waaaaay off course, I must have done something totaly wrong :) I retried the star aligment.....even checking on Stellarium to be sure I got the right star....and I was still way out! Hmmm fed up I just used the controls to move the scope to Jupiter, but as it wasn't aligned right it didn't stay on track :( I so wanted to see M31 but couldn't find it, I managed M45 (as they are obvious) and the moon too. The handset did bleep at me once and said Polaris out 0.60deg...what was that about? I gather I wasn't aligned right but why did it bleep to tell me how out it was? couldn't it compensate knowing how out I was? SIGH lol....I will work it out....one day ;)

Share this post


Link to post
Share on other sites

Hi Celeste - usually when it bleeps and tells you its a few degrees out, you can press "escape" and hold for two seconds (the display will show "realign"), then recenter the object (the last goto object) and press "enter" it then stores the new alignment and recalculates the sky.

This is the PAE feature (pointing accuracy enhancement). It's only however accurate for the section of sky you're looking at. You may need to do it once again on another goto object if you move to another section of sky. It refines the pointing after one or two further realigns accross the sky.

I'm taking it given the mount was level and roughly polar aligned before you started :)

Share this post


Link to post
Share on other sites

Hiya, it's a Skywatcher 150PDS on an EQ3.2 goto mount.....I know it all works right as the guys from EMS helped me set up 1st time and it was spot on then. It's most certainly something I got wrong somewhere,I just gotta figure out where.

Edit: Kim, yes the mount was level and aligned as best I could do (about the same as the darksite was) I do wonder, maybe I put the weights on a tad off? would that cause it to be out? Also at the dark site the scope was 'parked', remebered settings etc, but Chloe accidentally turned the head...could that have made it think it was somewhere else? These things are so sensitive lol

Edited by Celeste

Share this post


Link to post
Share on other sites

Yes if the head was turned manually by accident it will have thrown the alignment out because the scope memorises movements on both drives. If it had been moved electronically you would've still been aligned :)

We'll show you how to balance the scope up next time - a slight misbalance will make it drag a bit and possibly spoil the tracking a little but barely noticeable unless way overweighted.

Edited by brantuk

Share this post


Link to post
Share on other sites

Ahh so there we have it thanks Kim, I did my best to put the scope in place but I guess just being that tiny bit off and it goes to pot. Thanks for the offer of showing us how to balance it right, I shall try to remember to bring some tape or a marker pen.

Share this post


Link to post
Share on other sites

We can get you through all of this easily enough, I've got the same type of mount so you'll soon be doing all as a 5 minute job.

Share this post


Link to post
Share on other sites
;) I so wanted to see M31 but couldn't find it

I found it,but didnt get to see it cos my secondary had misted up beyond being useable.Frustrating hobby aint it :)

Share this post


Link to post
Share on other sites

Thanks Glider :)

John, it sure is frustrating! Clouds almost every day, and on the odd occasion it's clear I can't set up properly hahaha...DOH me ;)

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.