SolarChat!

AndiesHandyHandies

vkx86 wrote: ↑Sat May 07, 2022 4:51 am Lunt has one very nice truss design - I think you can get some ideas from it.
There is very cool truss design from one of the forum's members - really good one IMHO.

I am afraid this type are not very stiff or light.

Andrew.

AndiesHandyHandies

Hi Been struggling for some time with the poor quality micro-USB plug on the Quarks. Initially I pushed a bit of plastic credit card from the inside of the housing to tighten up the pressed unit. Sanded off a wedged front to get it pushed in. Not a very effective mod. After trying taped on right ang...

AndiesHandyHandies

Hi We had a crisp sunny winter day. Some wind early on but seeing not bad. Improved during the day. 90mm F6.7 TS Triplet, 2" UV-IR, RedCCD, 1.25" Baader 7nm, T2 Prism, 3xES TE for F20, and additionally ES2x for F40, Quark Chromo, DS PST Etalon, 40mm Celestron. Nice full disk views. At F40 ...

AndiesHandyHandies

Hi

Under the stubby prom at 6.30 I can see 1 complex or two loops.

There is a loop starting above the prom, going under the prom and then looping back up like a fish hook.

There is a partial loop to the upper right of the fishhook loop.

Get observing / imaging now.

Cheers. Andrew.

AndiesHandyHandies

Hi Nice captures of the proms. Nice to have good images from the east all ready to compare my visual with. For me the proms always look a bit more contrasty compared to images which tend to be a bit soft. Lots all round the disk today. Nice filament there. After using lots of PVC tape I managed to g...

AndiesHandyHandies

Hi

Nice images.

90mm F6.7 3xES Quark Chromo DS-PST 40mm

The lower left of the double connected spots had a light bridge for me.

Generally the surface was pretty much the same.

There some nice Fila-Proms At the bottom for me. As at the top of your last limb image.

Cheers. Andrew.

AndiesHandyHandies

Hi

Quark Chromo coming up to temperature properly after bodge.

Nice DS view at F20 full disk.

AndiesHandyHandies

Hi Surely a Quark is a more appropriate rear etalon for a small telescope? And if you want to use the Lunt 50mm just use where its designed to go on the front of a telescope. With the single etalon you will only see prominences well and some surface details may improve with a polariser. Cheers. Andr...

AndiesHandyHandies

Hi The bodge on the Prominence worked alright. I had to have another bodge at the Chromosphere. Changed the plug packing and with a light taping makes contact. The problem is really the poor quality of the Quark socket. The contacts are light and flimsy so they have to be adequately aligned and held...

AndiesHandyHandies

Hi Good news, so far, bodged up a solution which seems to work at rest on table. Cleaned the inside of the plug and socket with 3M Stabilant NN. Supposed to use quantim tunneling to improve current flow. Wrapped plug with clear sellotape. Two thicknesse on the bumpy flat side, one small bit, and the...

AndiesHandyHandies

Hi

Spoke too soon. Chromo not staying green. The Prom runs very hot round 60-65C.

Mmm

AndiesHandyHandies

Hi Mostly been using my Quark Prominence but its playing up in plug in mode. So I had the Promonence out where I have already had to tape on a right angled lead. I had a nice view of a good pair of proms. But there was some scatter off mica cleavage, or drop, damage in a sector. Was a bit surprised ...

AndiesHandyHandies

Hi

Had the Quark prom out as Chromo plug in playing up. Prom has taped on RA plug so worked.
Had a nice view of your first prom set.

Cheers. Andrew.

AndiesHandyHandies

Hi

X-Class flare, Cerro Tolero just.

20231231220142Ch V01 by Andrew Huskinson, on Flickr

Happy New Year to all.

Cheers Andrew.

AndiesHandyHandies

Hi

I use Black3 on 180 grit grey emery paper for small pop in springy self holding cylinders.

Cheers. Andrew.

AndiesHandyHandies

Hi Why not buy one of these? https://www.teleskop-express.de/shop/product_info.php/info/p15631_TS-Optics-60-mm-f-6-ED-Refractor---Finder-and-Guide-Scope---extendable-for-astrophotography.html I assume that will fit in your suitcase. Use the LUNT 50mm front etalon at the front, stops it down to 50mm ...

AndiesHandyHandies

Hi Frank Hourigan said there were 10 things limiting resolution and aperture was well down. I am lucky to be on a cliff edge and with an extended pier keeping the scope well off the nearby ground. When I was PST Mod 2ing my 180mm F10 Santel Rumak with bino-viewers I was getting good surface details ...

AndiesHandyHandies

Hi

Gong image.

20231128105322Th by Andrew Huskinson, on Flickr

Cheers. Andrew.

AndiesHandyHandies

Hi A nice still sunny autumn day. 90mm TS Triplet F6.7, VK 3X TE, (ES 2x TE), Quark Chromo, (PST Etalon) or Micro-focusser for baffling, 40mm Celestron Symetric. https://live.staticflickr.com/65535/53360876212_b88a8219bd_k.jpg P1070173 Portrait by Andrew Huskinson , on Flickr Because of high haze F4...

AndiesHandyHandies

Mark, I believe that at least a 100mm for the Ha line can be used for larger scale with the same success. Other than this, the works are great. Valery Hi If I can see essentially the same details as Mark imaged with a 50mm am I at the limit of resolution or contrast I can acheive with the 3x 90mm F...

AndiesHandyHandies

Hi

Nice images.

From a few miles north I had very similar views with the 90mmF6.7 at 3x and 6x.

Cheers, Andrew,

AndiesHandyHandies

Hi A sunny still autumn day. I had a little review of the baffling and made a few changes. 3x DS PST I had a pleasing session. On a par at least with yesterdays FD images. Good contrast on fibrils and as usual the proms. 6x DS PST Nice views of the bright flares round the spots. Looking forward to a...

AndiesHandyHandies

Hi What etalon setup is it? Is DS11 one front etalon? cheers. andrew. DSII (DS2) is a combination of Quark + LS40. I use it on all telescopes. The blocking filter is at the forefront of the Quark, then the LS40 follows. This combination gives the best results. Petr Have you checked the temperature ...

AndiesHandyHandies

Hi

What etalon setup is it? Is DS11 one front etalon?

cheers. andrew.

AndiesHandyHandies

My moved collimation lens is about 80mm infront of the PST body. Cant see any issue.

AndiesHandyHandies

Hi TS CF Triplet 90mm F6.6 APO Refractor https://stargazerslounge.com/topic/331990-ts-optics-photoline-90mm-f66/ This was my personal retirement present. You will only get the best possible image with a good triplet APO which has enough degrees of freedom to correct the first 5 Seidel abberations. A...

AndiesHandyHandies

I am glad you had the time to " try again " Andrew. I seem to have spent a lot of the summer working on my solar set ups. It seems my TS 90mm F6.7 Triplet is a very good telescope for solar observing. Maybe good at my location for my seeing. I took a long time to come to using the DS PST ...

AndiesHandyHandies

Hi I saw a vintage telescope today. Brass refractor on equatorial mount and a wooden tripod. Two dampers went from the bottom of the OTA spreading out to two lower legs of the tripod. Not top as I thought. The dampers had a smaller tube going up from the bottom with 'leafs' spread out at the top to ...

AndiesHandyHandies

Hi

Try, try and try again.

After my last observations with high haze I had a re-build of my pre-quark stack. Details later.

P1070144 Haze Killer PPV by Andrew Huskinson, on Flickr

Cheers. Andrew.

AndiesHandyHandies

Hi

Try, try and try again.

After my last observations with high haze I had a re-build of my pre-quark stack. Details later.

P1070144 Haze Killer PPV by Andrew Huskinson, on Flickr

Cheers. Andrew.

AndiesHandyHandies

marktownley wrote: ↑Tue Oct 24, 2023 7:04 pm I made a hargreaves strut for my 5" frac.

Was that as I thought from top of tube down to pier with friction damper?

Cheers. Andrew.

AndiesHandyHandies

Hi You have a long telescope on a small equatorial mount. 2 things which may help. One is to brace the top of space frame tube to the telescope pier with damping at the pier end. Add a Hargeaves strut. You have a rose joint at the top with a rod going to a friction damper at the bottom on the pier. ...

AndiesHandyHandies

Hi Here is Bobs diagrams. https://www.cloudynights.com/topic/659614-need-advice-on-using-baader-tz-2-telecentric-system/ For the PST and similar collimated solar set ups they only use singlet lenses so by using a positive and negative of the same FL balances out the abberations I suppose, and cheape...

AndiesHandyHandies

Hi Had a brief morning session. There were some nice proms. Just one prominent spot but a few filaments. Problem with the Quark Chromo was scatter from high level haze, contrail induced? DS with the PST was OK. Investigating there was scatter of the edges of the ERF filters it seemed. So a session b...

AndiesHandyHandies

Hi

The 'collimated' drawing is totally wrong. The first lens has to be concave and the same FL x -1 as the following convex lens to produce an image plane.

And the tele-centric on is meaningless.

Look at Bobs posts for a better picture.

Cheers. Andrew.

AndiesHandyHandies · Re: October 20 2023. Slooh Ha. Hi Hope the move goes well. Cheers. Andrew.

Hi

Hope the move goes well.

Cheers. Andrew.

AndiesHandyHandies

Hi

Glad to see it works in Telecentric mode.

My PST works OK a Double stack on a Quark with tele extenders.

Cheers. Andrew.

AndiesHandyHandies

Hi As Carbon60 said the first decent day for a while. Fortunately Solar had prior to my session posted some good images for today. 90mm F6.7 TS Triplet objective 2" Baader UV/IR Positioned so that the suns cone is entirely in the filter. Reflections 1/3 objective diameter. 2" TT Red CCD 1....

AndiesHandyHandies

Hi

I forgot the simple answer.

You can use other focal ratio (FNo) scopes, if it has a smaller FNo the aperture is reduced (Could reduce scatter off internal surfaces?), if its larger the image is smaller. Where the collimator is its FL in front of focus.

Cheers. Andrew.

AndiesHandyHandies

Hi

Are you then doing partial disk images? What is the aperture and focal length of the telescope being used?

Cheers. Andrew.

AndiesHandyHandies

Hi I took those from the PST Mod2 values. You need a lens of sufficient clear aperture to fully illuminate the etalon. And the negative dispersion lens needs to be placed its focal length in front of the telescopes focal plane. This then in your case provides a 40mm parallel beam throught the 40mm e...

AndiesHandyHandies

Hi

Are you using the 4.2x version?

What diameter is the illuminated cone at that point?

Cheers. Andrew.

AndiesHandyHandies

Hi

Why did you put the 14mm ring in?

At least the brightness went down a bit so theory seems right to some extent.

Cheers. Andrew.

AndiesHandyHandies

Hi The Hironde space telescope has a perforated 45Deg mirror to let the wanted light through and reflect the rest out of a side window. They have no ERF as such. I assume you are going to be doing partial sun high resolution imaging so you can do the same. And have a laser type heat dump outside of ...

AndiesHandyHandies

Hi You use a cylinder like Zeiss does to hold the secondary in and adjust its position at the end of each vane of the upper cylinder end. It extends below the secondary with an exit hole in front of the focuser. Getting a suitable elliptical secondary is not an un-surmountable challenge, A large thr...

AndiesHandyHandies

Shame its inverted only.

AndiesHandyHandies

Hi

Thats interesting that its consistent, so nothing to worry about it seems.

Mine is the cheap pistol one.

Thanks for your reply.

Cheers. Andrew.

AndiesHandyHandies

Hi Would it be possible to do the same exercise for the original Quark Blocker and graph them both as on CVs composite graph? My concern is that Daystars vague advice is not good enough to get the best out of the standard Quark. Perhaps the original being wider is better for casual viewers? Cheers. ...

AndiesHandyHandies

Hi If its never been on band you do not know how bright it can be! You need to cool it say to 5C with a freezer pack and as it rises in temp check the brightness of a stable feature. Put a bendy freezer pack over the blocking filter with a 25cm extension on the Quark Combo so the alloy round the blo...

AndiesHandyHandies

Hi Surely you reduce the heat load inside the focusser area greatly by using a clear optical glass for the secondary substrate with a dielectric h-alpha selection coating on the diagonal entrance face. Most of the off h-alpha energy will then pass straight through the optical glass sub-strate with a...

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