Stopping dust getting on my camera sensor

[Pertwee]

I have a sky watcher reflector telescope and I would like to connect my dslr to it .how can I stop dust from getting on to my camera sensor?

[Leveye]

Get a coma corrector and it will block out the dust.

[JamesF]

If it's a Canon you could use one of the clip-in LP filters.  Astronomik do them I think.  Not cheap though.

James

[Steve Ward]

Which reflector do you have , there are a few potential issues that should be addressed before you need to worry about a little dust ... 

1.  Is it a 'Dobsonian' mounted telescope ... ?  ... if so you are going to struggle to do anything but very basic snapshooting with it due to the way the mount works.

2.  Is it one of the Reflectors that Skywatcher produced that is 'optimised' for imaging , either the 130/150/200/250/300-PDS or any of the 'Quattro' range ... ? ... these have all been made 'shorter' than the standard range so as to allow them to come to focus with a camera attached , if not then you may be faced with minor surgery to move the primary mirror up the tube to allow focusing to be achieved.

[dph1nm]

I keep a cheap Skywatcher LP filter permanently on the end of the T-adapter (all 2") on my Canon1000D. Never had any trouble with dust.

NIgelM

[NosamLuap]

I use a 2x Barlow attached to the camera via a t2 ring - the lens in the Barlow stops dust ingress (or at least minimises it, as with a regular camera lens)

[JG777]

There is no fool proof way of stopping dust getting onto your sensor whatever your using it for. If you have a DSLR and are changing lenses or connecting to other items dust is a fact of life. What has to be measured is if its having a noticeable effect on your images then of course corrective action is required. Most DSLR sensors will have some dust on them even if you think it is not there it probably is. It can also be in the pentaprism chamber or the viewfinder.

Good precautions will minimise it, but rarely if ever can you avoid it completely.