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Posts posted by skybadger
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eBay provides a competed onstep kit for about 150.
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The micro sieve based variety need to be baked at a high temperature in a drying environment, typically in a closed tin of silica gel., According to manufacturers browning. 5 hours is longer than they recommend. Maybe that's the trade off.
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Theres a shed loads of sprung flip caps on eBay, Amazon and Ali that I've moved to for my eyepieces since you can leave them on, they provide eye shade and when finished, just flip them shut.
Full range of barrel sizes, so if you haven't got standard size eyepieces, you can still find one to fit.
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1 hour ago, Richard Wesson said:
As suggested by StevieDVD here is a summary of my issue and the solution.
The issue:
TP-link tl-wr802n portable router was used in access mode to create a wifi network without internet connection. This had previously been used with a mini-pc (ACE-PC AK2). I could then access the mini-pc in headless mode using RDP or Teamviewer, with the connection between portable router and mini pc using LAN. I purposely wanted access without innternet connectivity to be able to use it at remote sites.
However, when I attempted this with a recently purchased second hand NUC (NUC513 MYHE), the NUC did not connect properly over LAN showing NO NETWORK. LAN was working as evidenced by ability to access log in page of router and ability to connect to home router which was connected to internet.
My solution
- Ensure that Remote Desktop is enabled
- Connect wirelessly from the NUC to the portable router.
- Doing the latter now shows the NUC as connected to the portable router via LAN and it is possible to connect to the NUC using RDP via the network created by the poetable router without an internet connection necessary.
This is nuts !
i can think of no reason why this would be the resolution and I've been an it person for quite a while now..
Maybe something else also got flipped while setting it up but... This confuses me very much.
Anyone got an explanation ?
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4 hours ago, AstroKeith said:
9mm is going to be a special.
A simple job for anyone with a lathe to drill out an 8 to a 9. 5 minute job.
Now to just find someone with a lathe!
I'm not too far away, could face and bore it.
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I've done this myself but I dont recall needing to do anything more than to take those grubs out and unscrew it. I think it's the grub screws that have ripped into the threads that you are hitting.
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2 hours ago, KP82 said:
The internal stellarsolver presumably shares the same database with astrometry.net. If astrometry.net can solve the pictures taken by IMX477 + 180mm FL, I don't understand why stellarsolver can't.
that would be my point too. why would ASTAP be quicker than astrometry if ASTAP has a dependency on astrometry ? Also why would ASTAP fail and astrometry succeed if they are using the same source data files ? That hints at the wrong config settings. Maybe too many stars for small scopes/focal lengths.
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I worked out how... Ta.
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I would disconnect the connection to the home WiFi by disabling the WiFi adapter. What happens then? I expect the wire lan connection to the portable router to come up. On the one hand you should be able to connect to both networks at once, maybe you need an explicit setting somewhere to enable that.
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Hmm struggling to read .rtf files on my phone.
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Thanks KP82.
I deleted astrometry.net from my Win pc because it was so slow compared to astap and then found that astap had a dependency on it locally. I use it for between 1800mm and 1200mm focal lengths.
What are you using to pole align that can use the rpi pictures ?
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21 hours ago, KP82 said:
Can we hear more ?
Like, what app is doing the solving, how much it impacts the rpi, what the sensitivity is like, why you use a button , the process to tell astroberry where the solution is currently pointing, how you manage or check for differential flexure, etc.
There's a couple of solutions for this ( auto alignment Vs guiding) and auto alignment could be continuous vs guiding which occurs during imaging.
My perfect solution has an auto alignment scope and oag guider.
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I have several thoughts.
Does enabling the wireless on the nuc disable the wired connection and vice versa?
Does the router prevent client to client network traffic. There's typically a tick box on the router for this
If the nuc can't see the 'internet', for a given definition of internet, windows can report no connection and work anyway. I have that when using a corporate vpn. Is there a DHCP, DNS and gateway identified for both the WiFi and wired connection properties ?
If there isn't a DHCP, DNS or gateway, define the nic as being its own gateway, with its own DNS and set to static IP.
Is the IP address of the nuc on the same network as the router ?
I think we need more info on the current setup to diagnose this further.
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I found that the red led washes out the view quite a bit and that it was more useful on a newt than a RC.
I'm guessing R is rosso. But until now never thought about it. I shall now always notice it.
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4 hours ago, adyj1 said:
Excellent job @powerlord!
Are you planning to share your build list and code? I have the 5 x 1.25" SVbony FW and similar plans for DIY automation, but the projects I've seen online so far have been much more complicated.
I appreciate a detailed 'follow-along' Youtube guide is quite an undertaking but if you can throw me some crumbs I'd appreciate it 😉
Thanks
Ady
Full your boots with my alpaca driver at github/Skybadger/filterwheel which is Arduino compliant but written for esp8266. Or lookup rob browns code for filterwheels and focusers also in github. You should find something there to do the job.
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2 hours ago, Franklin said:
How you getting on with them? I found the eye-relief quite short, had to remove the rubber eye-cups to use.
I had to read this carefully before I understood this to mean the eye relief of the Vixens. I find them ok. You do need to get close but that's ok for me. The optics, the usability and the views seem fairly balanced.i didn't pay a lot for them though so I wasn't expecting too much.
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That's a lot of hard work gone into that and it comes out looking a lot like my atik11000. Very nice.
Water cooling is a risky business from my experience, again with the 11000.
There's no real reason you can't get good low temperatures but you'll need to size the tec unit appropriately and raise the ccd on a socket to get sufficient clearance for the tec and good conductivity via a heat pipe to the case for cooling. Getting a good thermal sink to the hotside block is the key.
I have some spare PCBs for the original format cam86 if anyone wants any but they are cheap enough for a set of 10 from the web.
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I have one PCB mostly assembled on the bench but had to unsolder the surface mount chips to try to find a power bug which caused the 15v line to disappear. Still Haven't found it. My approach is to make up a second board and see if the same thing happens now that I'm better at soldering.
Have a handful of d70 chips to desolder and separate. Mostly lacking time to do all this as well as other projects.
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Tilt will cause the vanes to go out of focus and thus broaden but not to split.
I think that would take a significant tilt of several degrees though.
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On 20/05/2022 at 18:41, Chriske said:
Some tests have been performed if I recall correctly at CN forum years ago.
These test were done side by side comparing two different spiders.
There was no mentioning of loss of contrast at all.
In our workshop we did the same test only a few years ago. During telescopemaking course exactly same telescope different spiders. No loss of contrast, Maybe there was some but not visible. To be clear all telescopes are identical. I asked course(I always do) members to switched mirrors every 10 minutes or so. They end up with exactly the same mirror/scope. So that is why we could compare these different spiders without any doubt at all.There's a much deeper investigation on CN that compares a while range of spider types including different curves and numbers of arms. Also Suiter takes look at this too.
I used steel belting on my first spider on the 12" and then have built a wire spider for my next. The steel works fine under tension. That one is 0.5mm thick and free.
However I have learnt that it doesn't matter if the limbs are offset from each other, they just need to be in the same alignment to prevent extra spikes being introduced.
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Astrobuysell is read in Europe.
Clear nights spoilt by thin cloud
in The Astro Lounge
Posted
I'm glad it's not me being precious about what makes a good clear night worth taking images on.
So I've been using it to hone technique and practice setup of imaging.
Always worth a pint if it's clear. If only to find out where focus is