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Last night started off so clear (an unexpected according to CO) so managed to drag the rig out onto the patio.
Nebula targets that are above houses and trees are few and far between at moment for me but ad a go at Horsehead initially then Heart.
But I was not happy with the images I was getting and a close look showed the focus was not precise, in fact far from it.
So using the auto focuser in EKOS I tried tuning it in.
But each time I tried it failed.
I did look on line for suggested parameters and that was not too useful as there were suggestions to use just about every combination possible.
Now, maybe there is a wide range of parameters being used and which you find best may depend on camera and FL of the scope setup, I think I do not understand the mechanism of auto focusing enough, I sort of assumed it just moved the focusser in and out to get the star it had chosen as small as it would go.
One thing I did find is that even after trying many different parameters already suggested as the best on-line if the stars had halos due to being a fair way out of focus it never achieved focus at all and basically I ended up manually focusing inwards for a while to see if the image got better, then if not move it outwards, until the stars were pretty much in focus and then an auto focus did pretty well and got the stars pin point.
So is that what other people find ?
Is that pretty normal for most auto focus algorithms ?
Also I thought this might be a good place for people to maybe say what parameters they use in EKOS and mention the scope and camera if that is relevant ?
If there is somewhere with this info I apologize profusely 🙂
I am looking to purchase a new guide camera following the sad passing of my trusty Meade DSI III, which has stood me in good stead for guiding for over a decade. I will be using the new guide camera with a 60mm Altair Astro finder/guide scope. Any recommendations or advice to inform my search would be gratefully received.
Will this new camera revloutionize the astro photography?
By the looks of it - it would gick the polemaster a tough competitor, and that is just the beginning!
I browsed the internet and discovered this new camera, but it looks to be quite a work horse.
The company sais it is wokring with "AI", has multi star guiding, can do polar align for you and also plate solve.
I made a video, covering the main features which it is supposed to have.
I need to have my eye on this company in the future
Hi, I've got a Skywatcher Heritage 130p reflector, and if i insert anything less than 10mm eyepiece, the image won't get crisp. I guess it's normal, but as I'm very new to astronomy, I'd like to know what the sharpness depends on exactly.
Is that the focal length (how fast the telescope is? ) or the size of the mirror and how much light it gathers? Or both affect it the same way?
Are things the same with refractors in this regard? Thanks.
As I said few days ago in my presentation I recently got my first scope (skywatcher 127) and over the last days I tried to test It.
Due to impossibility (temporary) to bring the scope in a decent location to make observations, I had to test it from home through a window (and under the sky of London - not the best at all). So i know that quality is of course affected.
On the other hand, I am sure that the performances are worse than I could expect also under these conditions (maybe you will correct me) and would asks for opinions to improve.
As a (mainly) planetary scope, I did not have a lot of choice: no Moon, Jupiter and Saturn out of my field of view. I pointed at Mars.
First sight, I see the very big central obstruction. I played with the knob of the focus to get rid of the big black spot in the centre of my target and here you are the issues that I would like to talk about:
1) the target became very small (ok) but still was not focus (very blurry and not a lot of clues to get atleast the shape of the planet well defined - can imagine to find any detail on it )
2) Also the colours did not convince me as no other colour than a light yellow was visible
3) Changing the eyepiece (10 instead of 25) for a magnification of 150x did not improve the situation: probably the image was even worse, more blurry with more irregular shape than before, no ability to focus at all. Differences from before : bigger (but still much smaller than expected) and very little variation in colours (I believe I saw a bit of orange).
To complete, later, I tried the scope to stars: Orion costellation was visible from my place and tried to all the stars. Although still a bit blurry (the brightest stars), I had impression of more sharp view, differentiation in colour and better shape (stars almost like a dot). Moreover, to give you a final idea, Mars (at the best focus I could get) did not appear that much bigger than Betelguese.
What do you think I can do to get better results? Could be a scope problem or some adjustments needed? Unfortunately I have no comparisons.
Thank you, Hope I was not too long 😅