RMercken

On 22/06/2019 at 10:47, FaDG said:

No experience with the Esprit 80, but I have TWO (*) TS Photoline 0,79 reducers (ok, I have the Tecnosky version, but it's exactly the same). 

Using it on a Sharpstar 72ED (same OTA as TS Photoline 72/400 f5.5), I can confirm that it's great on an APS-C chip. 

WARNING: I spent weeks to tweak the chip to reducer spacing, getting it right to 0.1 mm, and now always work at f4.5, and despite the T2 (M42) adapter, vignetting is not a big deal, can be corrected with good flats

@Ollyis right in that, at such an extreme f ratio, tolerances are very tight, and even the slightest tilt (in my case it was the camera sensor, but it can be the focuser or decollimation) will drive you mad. Finally I purchased a tilt adapter. 

Furthermore, major temperature changes need to be compensate by refocusing. 

But once you get the hold of it, it's just like magic! 

So, I can't say how it will perform on the Esprit, and you'll have to adapt backfocus, but if you are ready to stir the hornet's nest and survive, it could turn out great! 

Fabio

(*) Reason for having two is that I bought the first one used for cheap, as I didn't know whether it would work. When I had everything perfectly fit, I found a second used one for even less, and immediately grabbed it! 🤣 

 

Hi,

Did you bought the 2" or the 3" version?

On 04/12/2019 at 19:50, MoragaSky said:

I have one on order for my SW Esprit 120. SW staff recommended it. The dealer who saw it an imaging gathering recommended it. My hope is that the production model is as good. But Starizona has a good reputation for quality and for making it right when something slips through. At the same time I ordered the Pegasus Focus Cube2.

Hi, are you still happy with your Apex ED 0.65x Reducer / Flattener ?

On 31/10/2019 at 23:08, Jkulin said:

I looked at this but chose the Pegasus focuser for just £100 from AA, as it plugs direct into the UPB and works very similarly.

Is it just `£ 100 or is there extra equipment you need, i was thinking for newest model, not cheap but better and no fuss....

My first setup for tonight.... exiting

DONE .......hope so, next week when clear skies testing with telescope 🤨

Fase 4 Painting en tomorrow fase 5 hopefully

Fase 3

Very nice build 👍

Second Stage with again big help from Jerommeke

Hello, today i started my Todmorden Pier, below some first images.

Also a big help from my dog Jerom ....hihi

I have a Heq5 pro, so i thaught also 120 cm

Great help James , thanks a lot 👍

On 17/03/2019 at 12:21, JamesF said:

I am in the process of constructing "Todmorden" piers in my observatory.  Concrete blocks bolted and glued end-to-end and (in my case) bolted and glued to a concrete cube in the ground about 50cm on a side.  My intention is to clad them in ply as they'll be inside.  Peter Drew has a number that are just fixed to concrete slabs on the ground outdoors.  If you search the forums for "Todmorden pier" you'll find a few examples.

Really cheap (I paid about £3.50 each for the blocks and you may only need a couple), very stable and not too hard to remove should you need to.

James

Hi James, how did you glued the block together ? with cement or ? How high is you pier, 2 blocks or 3? Regards Rigo