First Solar session with 80mm F15

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First Solar session with 80mm F15

Post by AndiesHandyHandies »

Hi

We had a cloudy day with clear spells and light winds.

The 80mm now has a 2" focuser.

I set up the back of the Baader TZ2 with a diagonal and focal plane roughly 200mm behind the back of the TZ2.

I used the Combo nosepiece and my Quark Prominence. This showed the prominences very nicely with a good black background.

I have been having problems with the Quark Chromosphere power plug. After some messing about I bodged up a solution, maybe.
Cleaned with 3M contact cleaner and coating.
Rod said a right angled lead and plug should be better. A little bit of luck but not reliable. And taping the plug under pressure.

I have tried a bit of insulating tap on the back curved side of the plug and on the side of the socket. And managed to slide the plug in with the tape in place. Expand the plug into its hole. And push the contacts on the plug to the ones in the socket. Also adding some tape to push the plug into contact.

Worked once and I could see surface details so heating up. Trying inside and still a bit fragile contact.

ImageP1060949 by Andrew Huskinson, on Flickr

ImageP1060950 by Andrew Huskinson, on Flickr

Cheers. Andrew.


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Re: First Solar session with 80mm F15

Post by ffellah »

Very cool Andrew ! Best wishes for great imaging.

Franco


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Re: First Solar session with 80mm F15

Post by pupak »

The only thing missing is the Sun. :)


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Re: First Solar session with 80mm F15

Post by DeepSolar64 »

Who makes the 80mm?

I love long focal ratio refractors. I look forward to seeing what you can do with it.


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Re: First Solar session with 80mm F15

Post by marktownley »

Good first light Andrew! Looks a nice setup.

I've always thought the cr@ppy USB power connection to be the Quarks weak point.


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Re: First Solar session with 80mm F15

Post by arnedanielsen »

Very nice!

Best regards,
Arne


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Re: First Solar session with 80mm F15

Post by AndiesHandyHandies »

Hi

Scopetech. The story is they found the generator blanks for an old style 80mm F15. With ?modern glass and coatings!!! better than original ones.

It has high contrast on the Moon and so on.

Improves my bright Prom. Less scatter. The sector with mica cleavage faults on just shows as shadowed.

The proms were sharp, slightly better contrast on the dark holes in the 'ears'.

Did not get the Chromo on band till right at the end. And fault stopped it getting heated.

Cheers. Andrew.


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Re: First Solar session with 80mm F15

Post by AndiesHandyHandies »

StarHugger wrote: Tue Mar 07, 2023 9:01 pm Martin did a post on this a while back, I then converted to just placing a 90 and leaving it plugged in the quark.

Fingers crossed 🤞


Best Regards indeed...
Hi

The ones I got off ebay UK were flat elbow ones and they are all I can find.

Is there a special name for the ones with the lead at right angles to the plug?

Cheers. Andrew.


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Re: First Solar session with 80mm F15

Post by AndiesHandyHandies »

StarHugger wrote: Tue Mar 07, 2023 9:01 pm Martin did a post on this a while back, I then converted to just placing a 90 and leaving it plugged in the quark.

Fingers crossed 🤞


Best Regards indeed...
Hi

I am using a combo so no body to use to tie to.

Cheers. Andrew.


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Re: First Solar session with 80mm F15

Post by AndiesHandyHandies »

StarHugger wrote: Tue Mar 07, 2023 11:06 pm A narrow plastic band tie or tie wrap between the led and usb would hold on the case that you do have, would just be looped back to the case over dead air. Dont think that would prevent coupling and decoupling telecentrics, diagonals and such though.

Doable on the combo I think.


Best of luck Andrew...


https://www.ebay.com/itm/115625540636?h ... R5ab0-TXYQ
Hi

Thanks for the link. Now I see the same plug as an option on a UK listing!

A bit more fiddling with what I have first.

Cheers. Andrew.


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Re: First Solar session with 80mm F15

Post by AndiesHandyHandies »

Hi

I have had a search of bits and found a Lunt red D-ERF which has a clear aperture of 100mm in its supplied homemade holder.

The 80mm hood diameter is 100mm internal as well.

So need to get the router out and make a fitting.

I can stop down to 60mm to get F40 with the Baader TZ2 for combo visual and imaging.

Maybe 'go to' H-alpha scope as high contrast.

Rusted said a Baader D-ERF still let heat through. Possibly because not as many coatings on a large filter compared to a 2" or 1.25" one due to economics?

*** 'The Quark blockers are 600-699nm wide bandwidth.' I made an error clicking on a link and was looking at the wrong one. Its really 1nm. *** Similar to a Red RGB dichoric filter. So on my proposed Lunt D-erf, IV-IR & Red RGB set up, will allow full brightness going into the Quark. Does anyone have issue with the Quark image being too bright for imaging or visual with such filters. Only the 35nm or 7nm nighttime filters would reduce that brightness or a simple ND, or Polarising for Chromosphere, filter can be added?

Cheers. Andrew.
Last edited by AndiesHandyHandies on Mon Mar 20, 2023 3:40 pm, edited 1 time in total.


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Re: First Solar session with 80mm F15

Post by Dennis »

AndiesHandyHandies wrote: Mon Mar 13, 2023 1:36 pm Hi

I have had a search of bits and found a Lunt red D-ERF which has a clear aperture of 100mm in its supplied homemade holder.

The 80mm hood diameter is 100mm internal as well.

So need to get the router out and make a fitting.

I can stop down to 60mm to get F40 with the Baader TZ2 for combo visual and imaging.

Maybe 'go to' H-alpha scope as high contrast.

Rusted said a Baader D-ERF still let heat through. Possibly because not as many coatings on a large filter compared to a 2" or 1.25" one due to economics?

The Quark blockers are 600-699nm wide bandwidth. Similar to a Red RGB dichoric filter. So on my propoed Lunt D-erf, IV-IR & Red RGB set up, will allow full brightness going into the Quark. Does anyone have issue with the Quark image being too bright for imaging or visual with such filters. Only the 35nm or 7nm nighttime filters would reduce that brightness or a simple ND, or Polarising for Chromosphere, filter can be added?

Cheers. Andrew.
Hi,
a lunt d-erf doesnt exist, i think you mean a front erf from lunt. Big difference, better go for a front d-erf version, it will block way more energy and you can leave out the other filter stuff apart of the quark. There is no D-ERF which blocks the heat 100%. Best inform yourself about how much energy each of these types can block.

What do you mean with "full brightness"? Each filter has a transmission for a desired wavelength, so you never end up with 100%. The final transmission is the product of the transmission of all filters, lenses etc. in the optical train.
Since the transmission of the Quark filter array itself is relatively low, it never happened to me that i get "too much" light from it, at least with f-ratios around f/30. For the Quark @f/30 and up you want every bit of light flux you can get for imaging.


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Re: First Solar session with 80mm F15

Post by DeepSolar64 »

I am ignorant. How is a DERF different from an ERF?


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Re: First Solar session with 80mm F15

Post by Dennis »

DeepSolar64 wrote: Mon Mar 13, 2023 2:44 pm I am ignorant. How is a DERF different from an ERF?

Well actually you are right James, a D-ERF is also a ERF. What i wanted to say is that the Lunt ERF is a red glass filter, old technology. It will block around 40% of the incoming heat. Modern versions, so called D-ERFs will block around 80% or more of it, dependent on the model.


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Re: First Solar session with 80mm F15

Post by DeepSolar64 »

My Coronado ERF on the DS etalon is a red glass. Old tech. Does the D in D-ERF stand for " Dielectric " ?


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Re: First Solar session with 80mm F15

Post by Dennis »

DeepSolar64 wrote: Mon Mar 13, 2023 3:55 pm My Coronado ERF on the DS etalon is a red glass. Old tech. Does the D in D-ERF stand for " Dielectric " ?
yes, as far as i know the D in D-ERF stands for "dielectric", older versions are red glass and even older ones are yellow glass.


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Re: First Solar session with 80mm F15

Post by AndiesHandyHandies »

Hi

My Lunt appears to have a coating on one side.

Cheers. Andrew.


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Re: First Solar session with 80mm F15

Post by AndiesHandyHandies »

Hi

It might not be a Lunt as a non-standard size?

Cheers. Andrew.


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Re: First Solar session with 80mm F15

Post by AndiesHandyHandies »

Hi

Its 100mm diameter. I must have been thinking of the small homemade cell diameter.

IR coating, red glass, Anti-Reflection coating.

It is a tight push fit in the Celestron 100mm F5 dew cap so must have been used on one. Small turned plastic holder.

Cheers. Andrew.


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Re: First Solar session with 80mm F15

Post by AndiesHandyHandies »

Hi

Reviewing my filter sets, 3 I am taking Lunts approach of redundancy. And absorbing energy in stages.

Quarks Baader TZ2 2" Diagonal or * various TE on 1.25" T2 diagonal / PSTMod 2

On set of extension tubes - 2" Beloptic UV-IR on KG3 Long IR * 2" UV-IR / 1.25" UV-IR in Mak180 baffle back for PTS Mod 2
Pass 300nm

REDrgb : 2" * 1.25" / PST 1.25" Meade bit of blue leakage in Mak180 baffle back
Pass 100nm

2" 35nm * 1.25" 35nm / 2" 40nm
Pass 35/40nm

Quarks / PST post-Refocus lens

1.25" UV-IR / 1.25" Beloptic KG3 Long IR

20mm Red glass / Red 25A glass, CPL for reflections, 7nm for reflections off Bobs 1.5A trim/comb filter

See if visually any dimmer. Depends on reflections due to added filters.

Cheers. Andrew.


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Re: First Solar session with 80mm F15

Post by MAURITS »

Beautiful setup Andrew.


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Re: First Solar session with 80mm F15

Post by AndiesHandyHandies »

Hi

After another ponder having a common 2" set of extenders with IV-IR and then Beloptic UV-IR at the front.


Baader is in 2" diagonal so 2" filters and Quarks in T2 prism diagonal so 1.25" filters. So for both: Baader in front of diagonal after UV-IRs.

REDrgb

Diagonal

Baader 35nm ?reflections or dimming.


Red filter 20mm not front threaded and UV-IR on Quark nosepieces, H&S. Ideally get 1.25" Reds so can have UV-IR first.

May have a sunny morning tomorrow. British weather.

Cheers. Andrew.


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Re: First Solar session with 80mm F15

Post by eroel »

Andrew:
Beautiful setup and place.
Best regards.
Eric.


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Re: First Solar session with 80mm F15

Post by Averton »

Nice set up Andrew.


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Re: First Solar session with 80mm F15

Post by marios i. »

Very nice set up Andrew.


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