Jump to content

sgl_imaging_challenge_2021_2.thumb.jpg.72789c04780d7659f5b63ea05534a956.jpg

SmartGuider vs PHD


Recommended Posts

After months of getting OK results with the LVI Smartguider I thought I'd have a go at using PHD to guide. I've also setup with EQMod which is amazing but that's another topic.

On Wednesday I set out to try a few targets and not take any serious images - just push and see how well the guiding would do. So after setting up I picked IC405 and when nicely centered in the imager I took a peek at the QHY5 output and there were stars which, after a bit of focusing, were ok for guiding. I tried the calibration which failed the first time but then after tweaking the settings I was up and running in about 2 minutes. I started shooting 5 minute subs and when the first appeared the stars were, as far as I'm concerned, perfectly round. So I tried 10 minutes and had the same result. I've pushed it to 20 minutes and will try longer, just for fun, next time I'm out.

The whole experience was fantastic - compared to the anxious wait I have with the smartguider. PHD makes you feel like you're involved and can fix any issues. So no more smart guiding for me. Dummy guiding works better in my opinion. :)

This is 6 x 10min Ha(7nm) subs quickly combined in PixInsight. I'm going to go back and add RG&B next.

post-20393-133877495308_thumb.jpg

Edited by mark7331
spelling errors
Link to post
Share on other sites

Glad it worked for you, I was playing around with it the other night, as I wanted to muck around with the options. Nice image BTW.

Nadeem.

Edited by Deneb
Link to post
Share on other sites

Cheers Nadeem :( That means a lot to me.

Have you used the log feature in PHD - I turned it on as a matter of course and yesterday played with PECPrep. It read the log straight in! Really cool. Thankfully my PEC errors appear to be tiny. Phew!:)

Link to post
Share on other sites

Mark, QHY5 and PHD I have got to 60 mins guiding so far :) the only trailing I have found is when a cable was slightly dragging over a tripod leg or cloud. I found balance was critical though, never bothered with PEC logging though as that is more for unguided I believe. Like Deneb, I use the graph and star profile all the time.

Oh and use the ST4 cable option I think it is easier and probably better than the Ascom pulse method, although that is a rather unqualified statement as I have not tried the latter.

Edited by MarkF
Link to post
Share on other sites

Cheers Mark. I am so excited about QHY5 and PHD! EQASCOM pulse guiding was an absolute dream. So cool and the smoothest I've ever had.

I think, as you say, balance has to be as near perfect as can be and probably polar alignment which is where ESASCOM has nailed it for me.

After a year of struggling I feel that now I know what I'm doing. :)

P.S. you guys are brilliant. Thank you!

Edited by mark7331
forgot to say thank you
Link to post
Share on other sites
Cheers Mark. I am so excited about QHY5 and PHD! EQASCOM pulse guiding was an absolute dream. So cool and the smoothest I've ever had.

I think, as you say, balance has to be as near perfect as can be and probably polar alignment which is where ESASCOM has nailed it for me.

After a year of struggling I feel that now I know what I'm doing. :)

P.S. you guys are brilliant. Thank you!

I have never tried the pulse guiding, just select camera in PHD under mount I think it is and plug an ST4 cable from the QHY5 to the Mount and it talks direct to the mount rather than sending a signal to the computer to work out and send back. If you don't have the cable stick with what you have as it works :(

Link to post
Share on other sites
Mark I bought an EQDirect thingy from FLO. £40ish and it's fantastic.

I used to use the ST4 with my LVI but now have less power leads and cables and a far better result. :)

Ah right, I made my own cable up for the direct connection, but still use the ST4 cable from the camera to the mount, but hey if it works stick with it, I never tried without as the advice I read was to use the ST4 cable. EQmod is marvellous though once you get your head around it, polar alignment with it is a doddle too, far easier than setting your polar scope circles up.

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

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.