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Everything posted by Stuart1971
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Our post had been a nightmare recently, with some items taking forever to get delivered, and some days when the postie does not even come…but in the last few months I have had a few items from @FLO and each time they turned up the next day regardless, somethings when I didn’t even order till the afternoon the day before, so I can’t complain, they can keep my credit card and other bills…as long as my Astro kit gets here…😂😂
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UK supplier of Touptek Astro cameras
Stuart1971 replied to Stuart1971's topic in Discussions - Cameras
Agreed, some people would much prefer to only have to send back to a UK dealer though, but certainly if you are happy to pay the fees and send it back to china if there is an issue, then yes buy from china, not sure what the price difference would be from china with fees, or from UK dealer fees and VAT all in…maybe not that much…🤔🤔 -
Filters - advice please.
Stuart1971 replied to Skipper Billy's topic in Discussions - Scopes / Whole setups
That looks superb…nicely done…👍🏻 -
Filters - advice please.
Stuart1971 replied to Skipper Billy's topic in Discussions - Scopes / Whole setups
What do you get on images with no filter or just a plain glass filter ?? -
Filters - advice please.
Stuart1971 replied to Skipper Billy's topic in Discussions - Scopes / Whole setups
If it was that, it would show on all filters and not just one of them…but still a good idea to cover, or swap them out one at a time for Black headed ones.. -
For those that did not know, there is a UK supplier of all the Touptek Astro cameras, theses are tried and tested cameras, and have been supplying to the scientific market for a long time, and are used in many of the big retailers models, ie, Altair Astro, Omegon and explorer scientific all use Touptek hardware based cameras and rebrand… I personally did not know about a UK dealer of them until yesterday… This maybe of some use to some of you, obviously the prices are not as cheap as buying from china, but are cheaper than the bigger well known brands.. https://www.microscopecameras.co.uk/astronomy-cameras
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Can I ask too, is it possible to set the zero position on this rotator, by this I mean if I wanted the rotator to be in a certain orientation when at zero, this could be set…?
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exactly my point, so a beginner can get better bang for buck buying second hand…IMO…👍🏻
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Hmm, I think £200 extra for a TEC cooler is a lot TBH, especially when you can get a good secondhand 533 for around £550 now, which is a much better choice for a beginner with £600 to spend…and the 533 sensor, is pretty much double the size of the 585..
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No problems with any sag or tilt being introduced with the DSD version…???
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I had the Pegasus version, and had it fitted between the scope and the flattener on the esprit 100, as did not have room the other side of the flattener, due to have a tilt adjuster fitted there, Pegasus supply the correct adopters to fit in this space, but they were an extra £70, it also meant the focuser did not need to come out as far, as this took up some of the backspace which was a bonus too…but I just found I never used it so took it out and sold it…maybe I will regret at some point… I have the DSD motorised flats panel and that is superb…👍🏻
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The Jellyfish Nebula - artistic non-OIII version (24.6 hrs)
Stuart1971 replied to AstroGS's topic in Imaging - Deep Sky
The Petzval design should actually be better, as the flattener built into the scope is much further away from the sensor, to make a reflection such as what you are seeing, so any reflections from that glass, going back to the sensor will be spread too wide by the time it reaches the sensor, your reflections are from a source much closer to the sensor itself. My guess would have been the filter anti reflective surface that should point toward the sky is actually pointing at the sensor…but you have tested this so I am at a loss -
The Jellyfish Nebula - artistic non-OIII version (24.6 hrs)
Stuart1971 replied to AstroGS's topic in Imaging - Deep Sky
Yea, my thoughts too, I have only ever seen this from the ASI1600..🤔 -
Brilliant review and comparison, the Optolong L-Ultimate 3nm comes out really well, much reduced noise too as well as nice small tight stars… Some Halo on the L-Extreme and a bit too on the Askar, but the Optolong is excellent… What I would like to see is if the Optolong produced halos on longer exposures, or whether it would still be halo free, as comparing it to 6nm filters for the same exposure length does not seem totally fair…so for example, a 3 min exposure on the 6nm variants against 6 mins on the Optolong Ultimate…would be interesting… ‘Excellent post all the same…👍🏻
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The Jellyfish Nebula - artistic non-OIII version (24.6 hrs)
Stuart1971 replied to AstroGS's topic in Imaging - Deep Sky
Hmmm, yes they are pretty bad, and also more worrying is the halos are off centre too, which only normally happens at the out edges of the image, would not expect this at all with a Tak106… I used to get halos off centre like that with my Baby Q which turned out to be a really poor example, with bad collimation issues… -
The Jellyfish Nebula - artistic non-OIII version (24.6 hrs)
Stuart1971 replied to AstroGS's topic in Imaging - Deep Sky
Do you use a flattener or reducer in your imaging train..? If so one thing to try is to put the filters on the telescope side of that, and you may find the reflections will be diminished..👍🏻 -
The Jellyfish Nebula - artistic non-OIII version (24.6 hrs)
Stuart1971 replied to AstroGS's topic in Imaging - Deep Sky
This was just a slight crop and a little stretch using just my iPad, hope you dont mind, if you do I will happily delete….👍🏻 -
The Jellyfish Nebula - artistic non-OIII version (24.6 hrs)
Stuart1971 replied to AstroGS's topic in Imaging - Deep Sky
That’s a superb image, 👏🏻👏🏻 but I can’t help but feel it could be stretched more to reveal more dust around the nebulas, exquisite all the same… -
So how do you stand in the age old Mono V OSC discussion…as you certainly seem to have taken to the OSC on the RASA…? Do you not feel that you miss mono imaging, as I know it’s pretty hard with the RASA set up with not being able to use a filter wheel.
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Olly, with these superb broadband images you regularly post, and are using a 2600 OSC camera, do you use any filters at all, ie, any light pollution suppression such as an L-Pro or similar…? Or are they totally unfiltered…?
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Help me choose: Tak FSQ-85 or RASA8
Stuart1971 replied to Icesheet's topic in Discussions - Scopes / Whole setups
I agree, we can do something about the star shapes now with BXT, but there is no Xterminator tool “yet” that will add more signal….👍🏻 -
Yea, at least it shows it well collimated….👍🏻
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Looks just like a collimation concentric star test image…like the one I got on my Zygo test with my scope, that’s really odd….🤔🤔
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Help me choose: Tak FSQ-85 or RASA8
Stuart1971 replied to Icesheet's topic in Discussions - Scopes / Whole setups
I will give you my experience… I owned a Tak FSQ85 and it was very poor indeed with modern small pixel cameras, even with 2 flatteners it was still pretty bad, and why should you pay a premium for a 4 element Petzval design scope with built in flattener, and then have to add a second flattener on the back, and have all the backspacing issues that you should have avoided with the Petzval design, it’s a joke to be honest, and the extra flattener gives about a 15% increase in image quality, at least they now supply the extra flattener in the box with it, as for using a reducer, well, I never even got that far. If you get a poor example then you are stuck, as there is no option but for it to go back to Japan for adjustment, with approx an 18 month wait. If you really trawl the internet this issue is very common and they are not all they are cracked up to be… Fo me the Rasa all the way….. I was the worst scope I ever owned, and I have had a few if you want astigmatism in the outer 1/3rd of your images like this, then go for the Tak