johngm

Hi Adam, I think thats a cracking image 👍. What were the lengths of the individual subs ? I only ask, as i'm looking at a 383L myself. At the moment, its a toss up between that and the ASI1600MM. The thing that keeps swaying me away from the ASI is the microlensing issue that particular CMOS sensor has.

Regards John, and keep up the good work.

Forgot to add, yes, i do realise that the 383L+ uses a ccd sensor, but ive been interested by the images ive seen on astrobin

Superb Image mate, and showing the cloud bands well. Keep up the good work 👍

John

4 hours ago, brenski said:

@PeterCPC thanks - tried - but no joy. I think this could be down to the frame rate - as @johngm suggests. i'll try again on next clear evening and see what happens.

Keep us posted and let us know how you get on 👍

John

Hi Brenski,

+1 for sharpcap. I would also recommend for lunar and planetary imaging you crank up the frame rate.  5 fps is a bit slow. I've just checked the spec of your camera on FLO website, and at 3096 X 2080, your max frame rate can achieve up to 30 fps, is suggest you use this setting. And on Lunar, try taking a 1 minute capture, stacking in Autostakkert, and keeping the best 50% of frames. I've not used Autostakkert in a while, but there are plenty of online guides.

John

Hi Carol,

For some reason, i cannot see the images, but have you seen this video ? 

John

Hi OYMD,

It seems to me, the seller wasn't as genuine as he sounded. From the images you've shared, he's definitely tried to do some kind of mod, which he didn't inform you about.  Unfortunately, when buying second hand online, that's a chance you take. At least on SGL, the majority are genuine sales, from people like us, who are mostly selling on, due to upgrading or having clear outs of equipment they don't use anymore, and on this site, people usually reply back to the seller with positive feedback in the sales forum.

I'm Just curios, and don't know if its this is against SGL rules, i'm sure a moderator will inform me, but would you disclose the site you purchased from ? If you don't want to, that's no problem, 

And BTW, welcome to the frustrating at times, but very rewarding world of astrophotography 👍

John

The Detail in the cropped image is amazing. This, without a doubt, shows the true worth of the ASI6200MM sensor.  I need to start saving my pennies 🙂 

Great upload Ole.

John

28 minutes ago, groberts said:

Thanks for the reply:

- does that mean you can pulse guide with it or only using ST4?

- the scope & price look good but the reviews are mixed?

Graham

Hi Graham,

Pulse guiding in a nutshell means you interface through ascom direct from PC to mount, or via the hand controller.  What mount will you be using for your widefield rig ?

Also, for what you want to do, you may as well just use a 9X50 guidescope and by an adaptor from modernastronomy for your ASI120MC. What may i ask do you want to pulse guide rather than via the ST4 port ?

John

RIP Heather, you have gone to the stars.

Im Sorry if i am getting political here, but we are being constantly told by both local and national politicians, about cutting down on our usage of electricity and gas, and we are even being penalised by so called green taxes. Its not only Brighton football club, go around most towns and city centres at night and see how many commercial premises leave there lights on all night. It seems to me, we are living in a hypocritical society. One rule for you and I, another for businesses. Whatever happened to leading by example ?. Time for new legislation me thinks. You couldn't make this up.

John 

you need to remove that extension tube on the focuser to reach infinity focus

John

What is the payload capacity you are looking at ?, this will help the members give you some guidance. If you are on a tight budget, you could look at upgrading your own mount with this kit.

https://www.firstlightoptics.com/sky-watcher-mount-accessories/synscan-pro-goto-version-3-upgrade-kit-for-eq5.html

you should be able to get this stateside and save on international duties

John

Fantastic image, i picked out another 4 faint galaxy's in that image.

John 

13 hours ago, Science562h said:

How do you have an observatory & image, with an unmodified DSLR? You sure, it isn't your backyard? In the U.S, private observatory cameras are still $10-$30K & those 'scopes still use spectrometers. 2-4 hr continuous recordings, at minimum, for private amateur non-sponsored state observatories.  They wil still not be sponsored, by the state or nation. 

From Online Dictionary

"a room or building housing an astronomical telescope or other scientific equipment for the study of natural phenomena."

John

Its a shame i am now on a weekend working pattern, because come the end of the month i will be in a position to purchase an ASI183mm, which i have been after, and one retailer is offering 10% off ZWO products !. that would have been a great saving of 93 quid.

John

1 minute ago, happy-kat said:

Depends on the lens, I stop my 85mm f1.8 down to f4 but some are ok wide open.

Yes, I here the Samyang 135mm f2 also performs well wide open. Hopefully ill be purchasing one this year.

10 minutes ago, happy-kat said:

Your star shapes look pretty OK to me.

Did you stop your lens down or use it wide open?

I agree. When using lenses its always a good idea to drop them down a couple of stops.

John

This is a great idea. I do not own, as yet, the samyang 135mm, but from some of the reviews iv'e read, this should go someway to removing the tilt that can happen using the standard EOS adaptors.

John

Unfortunately Bobby, that would not really be an upgrade to your modded 450D. To see any kind of benefit, you really need a Cooled camera. The cooled version of the 183MC is £200 more expensive, so you would be better off saving a bit more and going for that. There is a used one on UK Astro Buy/sell at the moment for £500, 

https://www.astrobuysell.com/uk/propview.php?view=156790

He states its less than 12 months old, but he is the second owner ? Curious to know why though.

John

Does help if i read your OP correctly. 🤔

Just now, toxic said:

hi John not the standard lens its the L so much better colour and much less chromatic aberration and thanks for the tips i just don't want to push it to much.

Didn't know it was the L lens, yes, great lenses. I was almost going to buy myself one ( if it it were the standard 70-300 )  😂

John

Hi Chris,

That image for a standard 70-300 lens is fantastic. The only way i could think of improving on this would to be maybe try tweaking the contrast and darkening the blacks slightly. All in all, a great image.

John

Hi Rich,

Regarding This question, i work in the automotive industry, and specialise in Aluminium Vehicles, and they have to go through vigorous VOSA Crash testing, so from this, they pass the regulation tests, at tons of force, so i think, IMHO, it would not mater, especially at the short focal lengths of these imaging Newtonian's. Also bear in mind, a tubular construction is very rigid. Also you have the added advantage of aluminium of being lighter. This is my input, but would be interested in others views on this subject.

John

I just stumbled across this post. Has there been any feedback from Grant yet Steve ? or has anyone else tried it ?

John 

Hi John, 

Welcome to SGL. And your from La Palma? you lucky thing. I love La Palma, and try and visit every couple of years. Always take my portable rig with me. Cant be the Night sky's there, especially on the west of the island. And i love to have a nice Cake and Coffe at Mirador El Time on a nice day.

From Another John 👍