Stu

Thanks Shane, I get it now! Was reading the diagram incorrectly Cheers Stu

Thanks Shane :-)

Thanks all. Where is the offset measured from then? I can calculate the value but don't know what to do with it! :-)

Hmmmmm, must be being a bit daft, I need to get my head around that in the morning! Cheers Shane

Thanks Shane, just the sort of stuff you get from a DIY store? Offset?? Can you explain? Cheers!

Quick question, I have a recoated secondary coming back to me shortly, what is best to use for fixing it onto the secondary support? It seemed to be held with some form of silicon I guess? Any particular type I should get? Cheers, Stu

Amazing stuff Damian, a crazy amount of work already! Looking forward to the next instalment [emoji3] Sent from my iPad using Tapatalk

I look forward to it! Is the mirror going in a Mapstar special custom truss Dob?

Great stuff Damian. It will be a real labour of love once finished, something to be proud of.

It's not too shabby that, lad [emoji6][emoji12]

All sorted, thanks Steve :-)

Quick question on this. I use the iOS app which works well. Is it possible to have it default to a particular location rather than always starting with the FLO forecast then having to change it? Thanks

Now that would be worth having!

I have noticed it too John, but for me it was a known and accepted issue when I purchased. I rarely use the eyepiece at minimum zoom, mainly in the 8.9 to 12 ish mm range I guess for observing. Additionally, I tend to use it for planetary and solar observing so edge performance is less important for me. I don't think it is as good off axis as Delos/Pentax/Ethos but it's great for my purposes.

Don't be. It was a painful experience.... These have all gone to new homes, hopefully being enjoyed still though. It did break my habit of never letting go of anything! It's a funny thing though, I still really enjoy using my Orthos instead, no idea why!!

I did have three but sold a load of very lovely Delos, Radian and Pentax eps to raise some cash, in part for the Vixen. The Leica was compensation for them [emoji6]. I do miss them sometimes and will replace at some point down the line.

Digger, if you've made some changes worth showing, go ahead and post them. This thread should not be just about high end kit, anyone should feel able to share what they have put together and be proud of it. Plenty of members get lovely views and achieve some great observing feats with comparatively modest kit, good on them I say.

This may illustrate the point a little too. Assuming a 10", f4.8 newtonian, a basic 25mm Plossl would give 1 degree of sky at x48 with a 5.2mm exit pupil. Under light polluted skies this is likely to give a fairly washed out sky background lacking in contrast. You could gain a wider field of view by moving to a 24mm Panoptic with 68 degree afov or even a 2" Maxvision with 82 degree AFOV but you would still have a 5mm exit pupil. Sticking with Plossls, to reduce the exit pupil you could come down to a 15mm or even 11mm and get down to 2.3mm exit pupil for a nice dark sky background, but your field of view would be under 0.5 degrees. Moving from this to the king of eyepieces, the 13mm Ethos (just to illustrate the point), you would get a slightly larger FOV than the original 25mm Plossl, at x92 and a 2.7mm exit pupil. This shows the benefit of widefield eyepieces, the same or similar amount of sky but with a darker sky background for better contrast. This table shows the figures..... ....and these show the varying fields of view. From inside to out, they are 11mm Plossl, 25mm Plossl, 13mm Ethos and 24mm 82 degree Maxvision. You can see that the Ethos frames the target nicely still but would give that darker sky for a better result. Stu Sent from my iPhone using Tapatalk

That is a lovely collection Steve, and beautifully laid out too. Sent from my iPhone using Tapatalk

One other thought Grant, how about fixing the time bar at the top so it doesn't scroll up, much like freezing panes on Excel? At the moment, when. You scroll to the lower information, you lose the time so have to remember where you were, does that make sense? Stu Sent from my iPhone using Tapatalk

Is that a new version to install Grant? Can't see this option and it sounds good :-) Can you please change the forecast for Buxton, Derbyshire from red to green for the weekend? ;-) Cheers Sent from my iPhone using Tapatalk

The shorter focal lengths are certainly challenging on eye relief, and a no no for glasses wearers so I understand why they don't work for you Michael. It's interesting, when I bought the 9, 12.5 and 18mm originally, I didn't really 'get' them, perhaps just not experienced enough. Since re buying them they get a lot of use, the 12.5 in particular. Sent from my iPhone using Tapatalk

Very nice Paul, both eyepieces and the box. What plans do you have for those four empty slots? :-) Sent from my iPhone using Tapatalk