Technicolour M20

[raymo]

Discovered some old subs; thought I would see what I could
do with them. 10 x 40secs @ 3200. Usual scope.
Higher res here http://www.astrobin.com/126148/0/
raymo

[PeterEde]

Very nice. more depth in that

[LightningNZ]

Looks very nice to me.

[Flugel88]

Nice one Raymo i love those star diffraction spikes they make want to buy a newt.

[raymo]

Thanks Peter, Cam, and Michael. Yes, I like the spikes too. You could, of course, add your own spikes. Different subject, but it surprises me a little that more APO owners don't keep a Newt for those very faint objects that would require enormous amounts of integration time with their APOs. Perhaps they insist on only the finest
images, so don't often image those extremely faint objects.
raymo

[LightningNZ]

Some people don't like the spikes. Also Newts are all well-and-good if you can get rid of the coma, but that hasn't been "easy" until the last few years. You also need a bigger mounting too.

[cometcatcher]

Those fast GSO / Skywatcher Newts are definitely great bang for the buck for DSLR's and OSC CCDs. At risk of getting into the great refractor verses reflector debate - APOs have their place too. That why you gotta have one of each. :D

[raymo]

Hi Cam, Yes spikes are a personal thing. F/4s have serious coma, but sixes are not bad, and if you can't afford a coma corrector you can crop out most of it. Your mount would make child's play of a nice little 6" f/8
Newt which would have minimal coma, and be cheap as chips; or an 8"
like mine, also cheap bought used. Horses for courses.
raymo

[raymo]

Spot on Kevin. I suspect that at the top end of the hobby there are people that think that if a scope is not an APO it's not really a telescope,
but those people have access to 150 or even 200mm APOs, so they are
not as handicapped as we mere mortals. Wouldn't an 8" APO be great
to own. I think I've wet my pants.:lol::lol:.
raymo

[cometcatcher]

Well the top end of the hobby have different needs as their cameras are very heavy by the time they add filter wheels and all the gadgets hanging off the end of the focuser. The little GSO Newts would buckle under the load.

Personally if I was allowed only one scope, I'd settle for a 6" F5 or F6 APO. That would do everything I wanted.

If you're wondering why I don't use my 6" F5 and 6" F6 Newts, they are inferior to my ED100 in almost every respect, so I retired them. My 8 inch Newts and the rest need a mirror recoat. Too much bother so I'll just get an 8" OTA when Bill goes away.

[LightningNZ]

Yep, there's a big range of issues you need to compromise on, so no one solution for everything - but mid-sized APOs do tick a lot of boxes, so I can see why they remain popular.

Personally I'm contemplating a Celestron RASA. ;)

[cometcatcher]

I had to look that one up! I must be getting old. I'm totally out of date with technology.

[kosh]

Very nice effort Ray. You are doing very well with such short exposures.

[raymo]

Thanks Goran.
raymo

[Rex]

Beautiful shot Raymo as always.

[raymo]

Thanks Rex, coincidence that I found those old subs just after you had posted almost the same shot. I've definitely run out of anything worth playing with, and/or posting.
raymo

[Camelopardalis]

Lovely raymo :thumbsup: nicely and naturally processed.

I haven't graduated to a grown-up focal length for imaging yet but hope to get some shots of this next year...

[raymo]

Thanks Dunk. If your shots are of a high enough resolution, and nicely
focussed, you should be able to enlarge them quite a lot.
raymo