Nice clear evening tonight here in Adelaide, although the seeing is not the best. However, was keen to have another play with the DMK21 and the 12 inch Goto dob. Both images are with the 2.5x powermate, therefore giving me about f12.5 (3750mm focal length). The avi's were stacked in Registax 6.
I have been perusing a couple of lunar charts, so just need to name the craters .
Thanks Robin and Mike. I find the moon just absolutely fascinating. Really want to get into the high res imaging. I think next on the list is an electric focuser and a red filter!!
I suppose the other benefit of lunar imaging, gives us something to do for the rest of the month when it is not ideal for deep sky imaging .
Nice work Daniel. Picked up some very nice detail there.
As for names.
The first one looks like Wilson, Kircher, Bettinus, Zucchius & Segner
The second one is Phocylides, Nasmyth & Schickard
Thanks for that Michael. Will have a look again now that you put me in the right spot!!
Quote:
Originally Posted by asimov
Nice work Daniel. Yes, get yourself an R filter for lunar as it does seem to help with seeing.
Thanks John. Just need to do a bit of research into what is actually required. I am assuming that it is not simplistically a wratten red filter that you pick up for twenty bucks, but a "proper" Astronomik R filter???
Yeah mate, I was going to add I don't think it's as simple as adding a red visual filter. I'm of course using the R filter out of my Astronomik filter set. I don't reckon you can buy these separately though.
I've found just the standard IR/UV cut is pretty good & I'm assuming you have one of them? Now what IS as good as an R filter is the one I made from a piece of exposed film some years ago.
Yeah mate, I was going to add I don't think it's as simple as adding a red visual filter. I'm of course using the R filter out of my Astronomik filter set. I don't reckon you can buy these separately though.
I've found just the standard IR/UV cut is pretty good & I'm assuming you have one of them? Now what IS as good as an R filter is the one I made from a piece of exposed film some years ago.
Hi John,
I am feeling a bit silly.........I imagine you are talking about a separate threaded IR/UV cut out filter...... I do not have one at the moment. With regards to my DMK, I was under the impression that the DMK 21AU04.AS USB had no IR cut filter. Would it be wise to get one???? So much stuff to learn!!
No reason to feel silly mate, even I don't know the half of it yet! I did my own tests with the DMK when I first got it, as I asked the same question as you & no one seemed to be able to answer it regarding the use of an IR/UV cut filter on a mono camera.
Admittedly, I don't see much of a difference between using an IR/UV cut & not with planet images, but on the moon I notice a slightly better result with the filter onboard. Not to mention it keeps the dust bunnies away as well. I've been reading IR pass & not IR block is the way to go with moon mono imaging. Also a 'deep red' filter....I think it was Ray that mentioned about a deep red.
Hi Daniel, John. You have buckets of signal, so I would guess that a Wratten filter will work OK - provided the glass is fairly flat. I use a deep red interference filter, but only because I already had one - a red absorption filter or maybe even a 29 would have to be worth trying (especially if only $20). Regards Ray
Cool! I have noticed that a some of the high res imagers on CN forums, such Yuri et al are using the Astronomik red filters. I suppose that was what got me thinking. I have been trying to do some research, but there does not seem to be too much info available. Oh well, more googling at lunch time!!
I have 3 (or is it 4) IR/UV cut filters, but being mainly into planet imaging with one shot colour cams, these filters are a 'must have' in that particular field.
As Mike said, better than using no filter I think, but to buy one JUST for the moon, well...There are cheaper filters out there.
These moon images of yours Daniel are splendid without a filter in any case!
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