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 Post subject: DSLR mount
PostPosted: Fri Nov 06, 2015 7:32 pm 
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Joined: Fri Nov 06, 2015 7:29 pm
Posts: 4
Hoping somebody would be kind enough to advise me to the best (for the money) tracking mount for use with a DSLR and large lens combo :?:

Thank you for your time


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 Post subject: Re: DSLR mount
PostPosted: Mon Nov 09, 2015 7:54 pm 
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Joined: Fri Dec 03, 2004 9:58 pm
Posts: 3547
Location: Wellingborough
Hi Colin, and welcome.

Depends on what you call a "large" lens :) . However the Skywatcher Star Adventurer has a good following these days and it's reported it can do 30sec exposures with a 400mm FL lens, the possible exposures getting longer as the FL of the lens decreases, as you might expect. It is also useable with a small telescope instead of a photo-lens,

Regards,

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Brian
52.3N 0.6W
Wellingborough UK.

254mm LX90 on Superwedge, WO ZS66SD, Helios 102mm f5 on EQ1, Hunter 11x80, Pentax 10x50
ASI120MC Toucam Pros 740k/840k/900nc mono, Pentax K110D
Ro-Ro roof shed


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 Post subject: Re: DSLR mount
PostPosted: Mon Nov 09, 2015 8:06 pm 
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Joined: Fri Nov 06, 2015 7:29 pm
Posts: 4
thank you
I've got a Canon 7d
Canon EF 70-200mm F/2.8 L IS II USM Lens
Canon Extender EF 2x III

big enough for me for the time being :D


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 Post subject: Re: DSLR mount
PostPosted: Wed Nov 11, 2015 6:21 pm 
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Joined: Fri Dec 03, 2004 9:58 pm
Posts: 3547
Location: Wellingborough
Nice setup you have there 8)

The "standard" :) approach would be to shoot off as many shortish exposures as possible and then stack them in software to improve the signal in the final stack. Software such as Backyard EOS for Canon has powerful tools to automate this process. In most places in the UK now very long exposures (i.e. of a few minutes duration) only succeed in allowing the sky-glow polution to overwhelm the target details, hence the stacking approach.

Apologies if you already have this, but one of the best investments you an make in astrophotography is to get a copy of "Making Every Photon Count" by Steve Richards,

Regards,

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Brian
52.3N 0.6W
Wellingborough UK.

254mm LX90 on Superwedge, WO ZS66SD, Helios 102mm f5 on EQ1, Hunter 11x80, Pentax 10x50
ASI120MC Toucam Pros 740k/840k/900nc mono, Pentax K110D
Ro-Ro roof shed


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 Post subject: Re: DSLR mount
PostPosted: Wed Nov 11, 2015 7:32 pm 
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Joined: Fri Nov 06, 2015 7:29 pm
Posts: 4
Thanks for that
I don't have that already, I'll definitely take a look!

I am very fortunate in that I live where there are good dark skies, Cumbria. All I need is clear skies :lol:

having moved here a while ago, I just can't help but to look up!!

It's great to get the support from people with much more experience

Thank you

Colin


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 Post subject: Re: DSLR mount
PostPosted: Wed Nov 11, 2015 7:39 pm 
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Joined: Fri Nov 06, 2015 7:29 pm
Posts: 4
"making every photon count", where can I get hold of a copy?
amazon and waterstones don't appear to have it?


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 Post subject: Re: DSLR mount
PostPosted: Wed Nov 11, 2015 7:44 pm 
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Joined: Fri Dec 03, 2004 9:58 pm
Posts: 3547
Location: Wellingborough
Sorry, should have included a link.

(this firm is one of the best in astro IMO )


http://www.firstlightoptics.com/books/m ... hards.html

HTH,

_________________
Brian
52.3N 0.6W
Wellingborough UK.

254mm LX90 on Superwedge, WO ZS66SD, Helios 102mm f5 on EQ1, Hunter 11x80, Pentax 10x50
ASI120MC Toucam Pros 740k/840k/900nc mono, Pentax K110D
Ro-Ro roof shed


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