kingboya

Hi,

Ok attached it all together and measured the distance,I havnt got callipers just metal ruler but i got the distance to just over 41mm.I managed to add a 1.2mm delrin spacer onto the 10mm

spacer at the m42 end.Just clipped it open with scissors and it fitted nicely good tight fit with no flexure.Link for delrin spacers here:-

http://www.firstlightoptics.com/adaptors/baader-t2-delrin-spacer-ring-set.html

So the gap is now 42.5mm plus the 12mm for the Atik gives 54.5mm.The optimal distance for this reducer is 55mm but this is good enough there is some tolerance with them.However I havnt given it a working test.That should happen when we get another clear night around about September.By the way the boot polish worked I dont know about vaseline never tried it

Could you perhaps do a small optical train diagram of your connections and lengths. I am still struggling to visualize things

Why boot polish? Is it better than say vaseline?

Excellent thanks for your help!

Hi I am in the process of doing this very thing and have also been in touch with Martin from FLO regarding relevent adapters.Martin informed me they are now having the adapters custom made to attach the EFW2 to the skywatcher focal reducer but I dont know what the spacing will be (M54 to M42x0.75) may be worth an email to them asking for an update.

I did something very similar to Gina but i got my m48 to t2 adapter(m42x0.75) from altair astro link here:-

http://www.altairast...id=16569&page=1

This adds 1mm on to the optical train

Flo sell a m54 to t2 adapter low profile link here:

http://www.firstligh...-t-adapter.html

This adds 1.3mm on to the optical train

I also got the EFW2 as 22mm and it is 12mm to the camera sensor.

I attached these together and measured the distance I got very similar results to Gina but found I needed 10mm to make the distance to 56.3mm I believe this is close enough.

I got the 10mm spacer from Telescope services the link is here:

http://www.teleskop-...p/info/p2260_TS

while I believe these measurements to be accurate I cannot confirm these measurements as the focal reducer is not in my possesion at the moment but I will have it back by the weekend and will attach them all together and measure

the distance to confirm.Feel free to PM me on saturday if you want to know the exact distance I get.

I've used this combination both with and without the FR and have the spacing sorted out. For using the 0.85x SW FR you need the following :-

• M48 to T2 adapter - Teleskop Express - http://www.optcorp.com/product.aspx?pid=17719&kw=TS-TSM48-T2&st=3
• Atik T2 to M54 adapter to fit EFW2 filter wheel - FLO :- http://www.firstlightoptics.com/adaptors/atik-m54-to-m42-t-adapter.html
• 11.5mm extra spacing needed to make the 55mm FR to camera sn]ensor distance. I used 8mm and 3mm T2 extension tubes - seems to be near enough. I tried putting a 0.6mm delrin spacer in but there wasn't enough thread on any of the adapters to give a solid attachment.

Hi I am in the process of doing this very thing and have also been in touch with Martin from FLO regarding relevent adapters.Martin informed me they are now having the adapters custom made to attach the EFW2 to the skywatcher focal reducer but I dont know what the spacing will be (M54 to M42x0.75) may be worth an email to them asking for an update. I did something very similar to Gina but i got my m48 to t2 adapter(m42x0.75) from altair astro link here:- http://www.altairastro.com/product.php?productid=16569&page=1 This adds 1mm on to the optical train Flo sell a m54 to t2 adapter low profile link here: http://www.firstlightoptics.com/adaptors/atik-m54-to-m42-t-adapter.html This adds 1.3mm on to the optical train I also got the EFW2 as 22mm and it is 12mm to the camera sensor. I attached these together and measured the distance I got very similar results to Gina but found I needed 10mm to make the distance to 56.3mm I believe this is close enough. I got the 10mm spacer from Telescope services the link is here: http://www.teleskop-express.de/shop/product_info.php/info/p2260_TS while I believe these measurements to be accurate I cannot confirm these measurements as the focal reducer is not in my possesion at the moment but I will have it back by the weekend and will attach them all together and measure the distance to confirm.Feel free to PM me on saturday if you want to know the exact distance I get.

Can you please help with my last query?

I am getting confused with the distances from the FR to the chip. Is it 55 or 56 mm?

Secondly, assuming 55mm due to the filter effects, is the following true?

Camera chip to front 12mm--> EFW2 22mm--> M48 to T2 adapter 1mm--> xxmm extension tube--> M54 T2 1.3mm --> FR.

Is this correct? If it is, then 55mm-12mm-22mm-1mm-1.3mm=18.7mm extension tube. You are all talking about extension tubes of approx 10mm?

I am clearly missing something, but I cannot get my head around this!

Thank you Andyo

I will pm you Saturday to find out your precise measurements. Thank you everyone for your time in replying!

Thank you all very much. I am sure I will have more questions shortly!

Thank you all very much. I am sure I will have more questions shortly!

:blink:I have an Atik 314L coming to me very soon and will predominantly be using it on the ed80. I do have a focal reducer too, but I have heard that spacing is an issue potentially. In the package I am also getting the EfW2 with filters.

Should I give it a go firstly without the reducer? Field flattening probably isn't a concern with the small chip I would have thought?

What spacers or adapters will be required?

Thanks

Tony

My first image, albeit one year ago! M81 and M82

Sent from my GT-P5110 using Tapatalk HD

Very very sad news. He brought astronomy to the masses. What more could you ask?

So is this a good scope to compliment my ed80? It seems to have a good following

I am very interested in this scope but what does the GSO mean in the name? I will have a go at DSO with this scope, but have the ED80 for that if needed!

Is this scope a buyer or avoider?

Hi

As stated, I am having trouble taking long exposures with BYE.

The camera is connected via USB, and the setting in BYE is set to camera USB, but the error message I keep having is :

Your camera requires a configured serial cable for BULB or Mirror Lock.

I am unsure how to proceed.

Could any of you fine folk out there shed any light on this for me please?

Thank you

Tony