Ouroboros
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Status Replies posted by Ouroboros
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Hi couple of weeks ago we talking about using a DSLR on my explorer 150.Camera is a canon 40D bit old i know,i have the attachments the Canon eos ring and the T piece. no i experimented in the garden just on a tv antenna which was a success,photo enclosed.Now i tried on the Moon this evening,between clouds and was a total failure,no way could i get it into focus,i tried 2 methods one with T piece direct into telescope eye piece and again with a barlow,both failed.Is it poss i may need a extension tube to get focus?.Telescope is non motor at the moment.Sorry to be a nuisance. Regards derek
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Progress! Is that with the focuser wound right in? Or have you got some adjustment either side of the optimum focus?
With your telescope, that is as big as the moon will appear with the prime focus method you're using. It's the same with my telescope, which is a 200P. The moon doesn't quite fill the photograph.
You will be able to get a rather sharper photo. I suggest using the manual setting with the aperture set as wide as possible. You'll need short exposures because you don't have motors on your mount I think and the moon is moving all the time. Setting a higher ISO will require a shorter exposure. Experiment!
Focus the telescope also in manual mode using live view. Adjust the exposure duration until you see the moon clearly. You might have a x5 or x10 setting in live view which allows you to zoom in on some feature on the moon to focus carefully.
When you're happy with focus, shoot lots of images varying the exposure. It's called 'bracketing'. You're more likely to get a good photo that way. One or two will probably be the right exposure.
Another tip: I suggest using a ten second delay so the scope vibration has time to settle after you press the shutter.
Practise all this in daylight. It makes it easier when you try later in the cold and dark if you're well practised during the day.
Good luck.
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Hi couple of weeks ago we talking about using a DSLR on my explorer 150.Camera is a canon 40D bit old i know,i have the attachments the Canon eos ring and the T piece. no i experimented in the garden just on a tv antenna which was a success,photo enclosed.Now i tried on the Moon this evening,between clouds and was a total failure,no way could i get it into focus,i tried 2 methods one with T piece direct into telescope eye piece and again with a barlow,both failed.Is it poss i may need a extension tube to get focus?.Telescope is non motor at the moment.Sorry to be a nuisance. Regards derek
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Hi couple of weeks ago we talking about using a DSLR on my explorer 150.Camera is a canon 40D bit old i know,i have the attachments the Canon eos ring and the T piece. no i experimented in the garden just on a tv antenna which was a success,photo enclosed.Now i tried on the Moon this evening,between clouds and was a total failure,no way could i get it into focus,i tried 2 methods one with T piece direct into telescope eye piece and again with a barlow,both failed.Is it poss i may need a extension tube to get focus?.Telescope is non motor at the moment.Sorry to be a nuisance. Regards derek
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Hi couple of weeks ago we talking about using a DSLR on my explorer 150.Camera is a canon 40D bit old i know,i have the attachments the Canon eos ring and the T piece. no i experimented in the garden just on a tv antenna which was a success,photo enclosed.Now i tried on the Moon this evening,between clouds and was a total failure,no way could i get it into focus,i tried 2 methods one with T piece direct into telescope eye piece and again with a barlow,both failed.Is it poss i may need a extension tube to get focus?.Telescope is non motor at the moment.Sorry to be a nuisance. Regards derek
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Yes. Not a good idea unless you're confident of your engineering skills.
I wonder whether a shorter focuser is available for your telescope? It might be simpler to replace it than to modify it. I suggest you contact First Light Optics, or whoever you bought the telescope from, to see whether a shorter focuser is available and what's involved in retro fitting one.
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Hi couple of weeks ago we talking about using a DSLR on my explorer 150.Camera is a canon 40D bit old i know,i have the attachments the Canon eos ring and the T piece. no i experimented in the garden just on a tv antenna which was a success,photo enclosed.Now i tried on the Moon this evening,between clouds and was a total failure,no way could i get it into focus,i tried 2 methods one with T piece direct into telescope eye piece and again with a barlow,both failed.Is it poss i may need a extension tube to get focus?.Telescope is non motor at the moment.Sorry to be a nuisance. Regards derek
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OK. I've done a bit of research on Google that may indicate you can't reach focus with a SkyWatcher 150. Here's a link to a YouTube video in which someone shows how to modify a scope like this. Take a look at the video and see if that's the sort of telescope and particularly the sort of focuser you have.
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Hi couple of weeks ago we talking about using a DSLR on my explorer 150.Camera is a canon 40D bit old i know,i have the attachments the Canon eos ring and the T piece. no i experimented in the garden just on a tv antenna which was a success,photo enclosed.Now i tried on the Moon this evening,between clouds and was a total failure,no way could i get it into focus,i tried 2 methods one with T piece direct into telescope eye piece and again with a barlow,both failed.Is it poss i may need a extension tube to get focus?.Telescope is non motor at the moment.Sorry to be a nuisance. Regards derek
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No problem. Like me you were probably clicking "Submit Reply" and not much seems to happen so we clicked it again. Just click once seems to be how to do it.
I'm puzzled by your focus problem. If you can focus on the aerial then the focus position for the Moon won't be far away from that. The Moon will come to focus with the focuser and camera further in towards the body of the scope. Thinking about the position of the focuser when the aerial is in focus, how much inward travel has the focuser got before it is wound all the way in?
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Hi couple of weeks ago we talking about using a DSLR on my explorer 150.Camera is a canon 40D bit old i know,i have the attachments the Canon eos ring and the T piece. no i experimented in the garden just on a tv antenna which was a success,photo enclosed.Now i tried on the Moon this evening,between clouds and was a total failure,no way could i get it into focus,i tried 2 methods one with T piece direct into telescope eye piece and again with a barlow,both failed.Is it poss i may need a extension tube to get focus?.Telescope is non motor at the moment.Sorry to be a nuisance. Regards derek
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Hi couple of weeks ago we talking about using a DSLR on my explorer 150.Camera is a canon 40D bit old i know,i have the attachments the Canon eos ring and the T piece. no i experimented in the garden just on a tv antenna which was a success,photo enclosed.Now i tried on the Moon this evening,between clouds and was a total failure,no way could i get it into focus,i tried 2 methods one with T piece direct into telescope eye piece and again with a barlow,both failed.Is it poss i may need a extension tube to get focus?.Telescope is non motor at the moment.Sorry to be a nuisance. Regards derek
