Deep sky and goto

[Gaztronomer]

Hi all first post so thought I'd say hello.

i have a celestron cpc 925 and have started to get some deep space images, i seem to have a problem and need some advice.

typical night

i would polar align the scope and all is good.

i then use the goto commands to say find andromeda

then I would set the guide scope using PHD

after a while and taking several images I then move on to say Orion Nebula but the polar alignment has been lost, and the goto commands don't seem to take me to the right places in the sky. I have even tried to navigate to say Jupiter and the scope is way out of alignment.

is this normal and am I losing the goto / polar alignment because I am locking onto a star using PHD.

Do I need to polar align again before I can use the goto

any help would be great as I'm kinda stuck at the moment.

thanks in advance

gaz

[Gaztronomer]

Topic should be goto not toto

[Richie092]

Hi, someone far more knowledgeable than me will no doubt be along shortly to help you but welcome to the forum. Another Essex member for the club

[Spikey]

Title fixed Also moved it to a better section.

[Spikey]

What mount are you using Gaz?

Whats your polar and star alignment process ? This wil help diagnose where things are going astray.

[Gaztronomer]

Hi all

spikey - I'm using the celestron 9.25 with the fork mount that comes with the scope

the polar aligning is programmes in to the handset and I use the eq north along and then I have to mount align to allow for the wedge, If I don't use the guider I can use the goto all night without problems - once I use the guider with PHD it seems to lose any alignment I have done should i want to move to another object in the handset database

thanks

gaz

[Gaztronomer]

Hi, someone far more knowledgeable than me will no doubt be along shortly to help you but welcome to the forum. Another Essex member for the club

what club ? I'm looking for a local one but didn't want to join until I had a little knowledge. Didn't want to look like the newbie fool

[Richie092]

Sorry, a little misleading but there is an Essex social group on SGL called the Essex cloud dodgers and although I am yet to make one they do meet up quite regularly.

Don't worry about looking like a newbie fool you can go with me. I will make you look like a genius having only just started myself.

[Richie092]

Roughly where in Essex are you?

[Gaztronomer]

Roughly where in Essex are you?

waltham cross / cheshunt

How about u ?

[Richie092]

Upminster so not too far.

there is a club in Cranham http://www.havastro.co.uk/ haven't been yet but will do first chance I get.

[Richie092]

http://www.havastro.co.uk/indexmainpage.html

try this one, not sure what happened to the last link

[Spikey]

I've never used a wedge so I'm not sure about how to advise you. Are you guiding off axis? Guiding operation shouldn't affect alignment points or polar alignment.