is my c8 edge hd best suited to planetary or dso

[iwols]

Hi all any comments on the above please ,my present scope is a ts optics 580mm with 0.7 reducer giving approx 406mm .Now ive just realised that i need the bigger focal length for my remaining dso targets,but never really used my c8 ,whats your thoughts please,or is there something more suited cheers iwols  ps always said once i get original set up spot on i would never alter it ,ive  permanent mount by the way

[knobby]

A C8 on an HEQ5 is going to be very near it's limits (still struggling with this myself - using the 0.7 reducer) It's doable but difficult - a heavy breeze is enough to give 2 or 3 arc sec spike in guiding.

You are looking at 0.65 " / pixel or about 0.9 with the reducer.

Just realized you have a CCD so you could bin 2x2 to give 1.31 which should be ok for the UK.

[vlaiv]

I would say it is equally suited for both types of targets.

If used mindfully and within its limits - it will give you great results on both.

What do you want to use it for?

[iwols]

53 minutes ago, vlaiv said:

I would say it is equally suited for both types of targets.

If used mindfully and within its limits - it will give you great results on both.

What do you want to use it for?

dso,galaxies,nebula 

[vlaiv]

Just now, iwols said:

dso,galaxies,nebula 

I think that it will be excellent in that role. According to Celestron - it is well corrected scope across large field.

Put x0.7 reducer designed for EdgeHD scopes and you'll have nice 1400mm of focal length with 8" scope.

Pair it with larger sensor - up to APS-C size and aim for about 1.2-1.4"/px (bin if needed - either in hardware with CCD sensor or in software with CMOS) and you'll get very potent imaging system.

I have something very similar - RC8" with 1600mm of focal length and ASI1600 and I'm happy with that setup.

EdgeHD8 should have similar performance.

Consider guiding with OAG.

 

[iwols]

45 minutes ago, vlaiv said:

I think that it will be excellent in that role. According to Celestron - it is well corrected scope across large field.

Put x0.7 reducer designed for EdgeHD scopes and you'll have nice 1400mm of focal length with 8" scope.

Pair it with larger sensor - up to APS-C size and aim for about 1.2-1.4"/px (bin if needed - either in hardware with CCD sensor or in software with CMOS) and you'll get very potent imaging system.

I have something very similar - RC8" with 1600mm of focal length and ASI1600 and I'm happy with that setup.

EdgeHD8 should have similar performance.

Consider guiding with OAG.

 

thanks do you have any uncropped examples please

[vlaiv]

1 hour ago, iwols said:

thanks do you have any uncropped examples please

I don't have much as I wasn't able to use it for quite some time (and that will hopefully change in summer / autumn this year) - but here are some examples:

Most of these are just luminance (or UHC filter) as I did not manage to capture the color as well. I did on NGC7331 - but with another camera and scope (80mm apo + ASI178mcc):

[iwols]

Thanks vlaiv some lovely images there