Stub Mandrel

My mistake.. the lunar tranits are visible in Lichfield. But I have three solar transits visible from home this month, and two of them are pretty close to centre.

Thanks!

I'm looking at https://transit-finder.com/results

There's a solar one at 2pm on Sunday, and I'm only 3.7km from the centreline.

There are two lunar transits visible from home on the 23rd !

It sounds crazy at first, but if the alternative is mass extinction and the collapse of civilisation...

But could be counter-productive... where do you shield?

Shield the seas and... algae stop turning CO2 into limestone...

Shield the land and people starve.

OTOH a lot of medium-sized geostationary things that chiefly block IR and are placed in a diffuse pattern so as to reduce irradiation over a large area rather than creating cold spots could have an impact without being noticeable from the ground. Also, partly shading large areas of permanent icecap could have a  disproportionately beneficial effect.

This is something I'd really like to do! Congratulations.

You can get M2 x 10mm screws off ebay.

Dust is ubiquitous, definitly not a fault in any unsealed camera unit.

You need one of these, the only way I have found to get a sensor clean without major frustration :

https://www.ebay.co.uk/itm/Sensor-Gel-Stick-Jelly-Camera-CCD-CMOS-Sensor-Cleaning-Kit-for-DSLR-Red/153136678365?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

But in practice, using flats will get rid of them.

16 minutes ago, Ben the Ignorant said:

Our sales price always depends on many single reasons.....the prices of the producers and also the number of ordered parts. So when we order a bigger number of articles we will get a better price and so we can sell ich cheaper.

I believe it. Binoculars are sold in much greater quantities than astronomical telescopes.

Actually came yesterday, but for some reason my desktop wouldn't synch with gmail and let me have the pic from my phone.

12 minutes ago, upahill said:

Do you know which board your clone runs on, there are probably ready to print/wire solutions on thingiverse but will likely require a marlin recompile whatever way you go.

Yeah, although not off the top of my head.  I've got all the marlin source for my board.

I want to fit a filament out detector to my Prusa i3 clone.

I'm pretty sure a microswitch will do the job, the trick is finding which set to terminals to wire it across and what to add into the code to enable it...

11 hours ago, Knighty2112 said:

Those were the days! Seriously!  

Worst of all, the ball was on the line....

12 hours ago, Knighty2112 said:

Fingers crossed for some clear skies later on this evening for a first lighting

Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha! Ha!

On the day you get TWO packages!!!!

You cannot be serious.....

I buy bog-standard AMZ3D PLA off amazon for about £11-£14 a reel. Find it works much better than Rigid Ink on my printer. I suspect that every printer has its favourite filament.

I've found that observing the moon with 100% NOT dark adapted eyes is the best way to see subtle colour in it. I imagine a similar effect applies with planets near the moon - forces your eyes to use colour sensitive cones instead of rods.

Of late I've had severe problems with my ASI120MC - don't know if it was changes to Windows or Sharpacp, the solution was to reduce the 'turbo USB' setting from 2 to 4, it didn't slow the camera down but made it more stable.

A park in Moseley, under clouds.

2 hours ago, A_N_other_beginner said:

Is there any benefit to adding counterweights?

A bag of rocks hanging from the tripod may help.

There are designs for highly directional wifi aerials on the web using pringles tubes...

https://www.makeuseof.com/tag/how-to-make-a-wifi-antenna-out-of-a-pringles-can-nb/

https://en.wikipedia.org/wiki/Cantenna

2 hours ago, JamesF said:

On the assumption you go ahead, please do post a thread about it.

James

Can you imaging me not doing that 🙂

4 minutes ago, kirkster501 said:

A good explanation and example Neil.  Thanks for sharing.

It amazes me how stacking can sort out all that distortion!

Hmm... -it's surprisingly well designed, lots of ways to do this

5 minutes ago, JamesF said:

I wonder if it wouldn't be pretty much as easy and more effective to machine a completely new housing?

James

Good point, I can make sure there's good thermal contact between the chip and its housing. Plus I could fit a  plastic nose to stop heat being conducted in from the scope.

There goes my weekend...

I want to try LRGB with it, so I'm going to see if I can make an aluminium clamp to put a peltier cooler on it. Then I can go for 5-minute exposures instead of 16 seconds!

10 hours ago, Star101 said:

My wife would like to do some nightscape photography. I would like to do a slightly different style of nightscape...so i bought this

Omegon LX3......I just need the clouds to clear now

 

 

The ideal solution for astrophotography after the Zombie Apocalypse.

Beginners are often confused by the difference between 'transparency' and 'seeing'.

Hopefully this short video of the area around the Apollo 11 landing site will help. The 'transparency' is good, with a decent level of detail and contrast. The 'seeing' is poor with the classic effect of looking through running water.