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Hi,

so yesterday I’ve received the Esprit 120 and some extras and I started right away unpacking and installing it on my mount.

The case and the accessories 

A64829FC-46B1-4769-B881-3CCB0CC931EE.thumb.jpeg.7c609b80efa6ee132570e046e0bbc461.jpeg

E9571AA9-C6E3-417F-BBAA-05A7353B2DFE.thumb.jpeg.f1bd470f54d3c6c6c95a81bcffd911b4.jpeg

29C36739-6232-4E9E-808F-5745D6BBF10C.thumb.jpeg.7fcf92f164467f70609735240118d87e.jpeg

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473B99FF-CFDC-49ED-99C6-983D2F56C237.thumb.jpeg.ed5567e9cbce1852d0969712df1f074f.jpeg

there was some debris in one of the taped holes On the rings, but i managed to get it out quickly with a pointy blade.

E42067A6-81A3-4856-9592-255936223D64.thumb.jpeg.cf165ab74e09d3d883d4822cfe2529e2.jpeg

the accessories:

67A31611-542D-4800-A80A-CCFA719669CA.thumb.jpeg.f6f5a60d3177c718ce033ecd4faf04c8.jpeg

Don’t know exactly wat the extension tube is for, I probably won’t need it.
It has a male M48 tread so i guess its for getting a DSLR into focus wen you don’t use the field flattener.

0C476CC2-DC0A-4F6D-838D-1061EC508C84.thumb.jpeg.c05c95d7925f5b4f83a9c0519b9c9b79.jpeg

The SW field flattener comes with some rings too, to mount it on the drawtube of the telescope (first remove te last reduction ring to 2”) and a ring with male M48 tread for connecting a T-ring and a spacer to get up to 75mm backfocus.

78C08A07-59AF-4F96-B6E1-556C9FD15D88.thumb.jpeg.131fbb33b8825ed7ac7dff545ec30137.jpeg

BEF7AB58-43A6-4C8A-98F2-6DAB3DE2935E.thumb.jpeg.696571efafe33e8d57439c466c62df34.jpeg

Next the TS 0.75 reducer/corrector on the telescope side it fits directly on the drawtube and on the camera side it has a reduction to M48. Backfocus is 55mm, witch is the same I had with my ED 80 it replaces.

25D8087C-3AB5-4A12-9F59-C3A4F6D8FF40.thumb.jpeg.31fd672227915618a3f65b46f248933e.jpeg

This ring can be removed, its not needed with the Esprit 120.

C32AEFCB-A70B-40A6-961D-719267AD4DA3.thumb.jpeg.e484ff2c75e4908c60622d8ad2a1b1a2.jpeg

AC07ECD0-DCA8-4928-B577-03D8F9B47A69.thumb.jpeg.92a9a8522224dc73529419081627438c.jpeg

Also got a Baader Click Lock for in case of visual use

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And the obligatory dew strap

FEDCFA32-FE87-417A-9618-8B38B4D8B493.thumb.jpeg.da2242b3bd1c10e4f43005dbbbc73fe2.jpeg

For size comparison Ed80 VS Esprit 120

0653F617-4957-4977-948B-7204D4B9F3F8.thumb.jpeg.74fef772fc5b6df462b0b1bf0ed4adaf.jpeg

Time to fit everything on the mount

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I’ve added a D-style 33cm dovetail on the top to mount the USB hub and Pocket Power Box  and i got some room left for piggy backing a DSLR.

So far so good, next step was calibration of the Sesto Senso, this is when things went wrong.

The Sesto Senso slipt or the shaft would even turn when the motor was.

i called in some help and started fiddling with the focuser.

At the end i had to loosen the screws that push the teflon bars against the drawtube, all is good now.

2C81E0EE-BC62-4186-A12C-498EC19A1228.thumb.jpeg.20aad6da978f89ba9d4788f4cb4f95e2.jpeg

 

 

 

 

 Edit: maybe worth mentioning, the whole setup weight is 13,3kg

Edited by Miguel1983
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1 hour ago, Miguel1983 said:

Also got a Baader Click Lock for in case of visual use

Is that the Baader 2in ClickLock M74i, available from FLO, which should also fit my Esprit 150

John

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1 hour ago, Miguel1983 said:

Don’t know exactly wat the extension tube is for, I probably won’t need it.
It has a male M48 tread so i guess its for getting a DSLR into focus wen you don’t use the field flattener.

This was also included with my Esprit 150, but no mention in the manual as to what it was for, I guess you are right, or to use the scope visually without a star diagonal.

John 

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25 minutes ago, johnturley said:

 

Is that the Baader 2in ClickLock M74i, available from FLO, which should also fit my Esprit 150

John

The focuser is the same so it has to be.

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Happy to report, the TS 0.75 reducer flattener (f7 --> f5.25) performes well without the need for additional rings, so the reducer fits directly on the ZWO OAG and the rest is according to the ZWO sheme for 55mm backfocus with OAG and EFW.

This is a 3*60sec stack of M45 (no flats), not cropped obviously.

1245438459_M453M.thumb.jpg.4771d5989905219c203e9c5ead70954d.jpg

 

and this is 1 300s frame

972477571_Triangulum300s.thumb.jpg.334dce3e2e1b5973c8872aa291c012ce.jpg

 

Edited by Miguel1983
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I recently got the esprit 120 with the sesto senso  I'm wondering if you can share your step size, if possible? 

Thanks 😊

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10 hours ago, rodrigol said:

I recently got the esprit 120 with the sesto senso  I'm wondering if you can share your step size, if possible? 

Thanks 😊

I have an Evostar 120ED with the sesto senso on the fine tune side of the focuser so should be similar.

My step size is 575 (calculated using SGP's instructions) and this works well for me, giving nice V curves during auto focus runs.

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Does the scope fit back into the carry case with the sesto senso fitted? Or would you need to cut out some foam?

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11 hours ago, gilesco said:

Does the scope fit back into the carry case with the sesto senso fitted? Or would you need to cut out some foam?

You would have to cut the foam, I guess. I personally wouldn't do it because the focuser motor sits lower than the focuser knobs and the fit would be very questionable. This would put a lot of pressure on the focusing axle when the case is closed. 

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11 hours ago, Rob63 said:

I have an Evostar 120ED with the sesto senso on the fine tune side of the focuser so should be similar.

My step size is 575 (calculated using SGP's instructions) and this works well for me, giving nice V curves during auto focus runs.

Many thanks! Perhaps you can share your imaging settings as well? Auto stretch factor, back clipping, star sensitivity, noise reduction....

Much appreciated! 

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13 hours ago, rodrigol said:

You would have to cut the foam, I guess. I personally wouldn't do it because the focuser motor sits lower than the focuser knobs and the fit would be very questionable. This would put a lot of pressure on the focusing axle when the case is closed. 

Well, I'll have to take a look at that when it finally arrives, I don't have a permanent set up, so it's either going back in the case, with or without the Sesto Senso 2 attached pretty often, or the case doesn't get used at all.

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I'm sorry i've missed al these comments above.

So about the case, i also think you would have to cut the foam, i'ts a guess, mine hasen't been in the case since i got it.

Edited by Miguel1983

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