Today's Big Prom! HA | March 12th 2019

this is the main message area for anything solar :)
Post Reply
User avatar
MalVeauX
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 1858
Joined: Tue May 09, 2017 7:58 pm
Location: Florida
Has thanked: 1171 times
Been thanked: 1360 times

Today's Big Prom! HA | March 12th 2019

Post by MalVeauX »

Heya,

There's a pretty big prom on the limb again, nice to have a large subject for a change. Not much else going on, the AR dissolved and there's no spots and only a wee filament or two to look at. But, there's always something to see in HA.

B&W:

Image

Image

Image

Image

Image

Color:

Image

Image

Image

Image

Image

Earth Scale:

Image

Equipment:

C8 Edge HD SCT + Aires 200mm Tri-Band D-ERF
Quark Chromosphere
ASI174MM + 0.5x Focal Reducer
PST
SolarSetup_03122019.jpg
SolarSetup_03122019.jpg (115.44 KiB) Viewed 2145 times
Very best,


User avatar
eroel
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 9408
Joined: Mon Dec 19, 2011 10:45 pm
Location: México D.F.
Been thanked: 4904 times

Re: Today's Big Prom! HA | March 12th 2019

Post by eroel »

Marty:
Super shots with the C8.
Best regards,
Eric.


User avatar
MAURITS
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 8507
Joined: Tue Nov 27, 2018 4:37 pm
Location: Belgium
Has thanked: 2412 times
Been thanked: 4787 times
Contact:

Re: Today's Big Prom! HA | March 12th 2019

Post by MAURITS »

Lovely images Marty.


Regards,
Maurits

Vista del Cielo Observatory

www.vistadelcielo.be
User avatar
marktownley
Librarian
Librarian
Posts: 42274
Joined: Tue Oct 18, 2011 5:27 pm
Location: Brierley Hills, UK
Has thanked: 20442 times
Been thanked: 10247 times
Contact:

Re: Today's Big Prom! HA | March 12th 2019

Post by marktownley »

Very nice Marty!


Image
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
User avatar
Montana
Librarian
Librarian
Posts: 34563
Joined: Mon Oct 17, 2011 5:25 pm
Location: Cheshire, UK
Has thanked: 17672 times
Been thanked: 8791 times

Re: Today's Big Prom! HA | March 12th 2019

Post by Montana »

Very fine processing Marty, the prom, limb and spicules are perfect :bow

Alexandra


xn44
Almost There...
Almost There...
Posts: 1160
Joined: Tue Jan 03, 2012 3:32 pm
Location: Begues, Barcelona, Spain

Re: Today's Big Prom! HA | March 12th 2019

Post by xn44 »

Perfect! Súper work!


User avatar
yltansg
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 2798
Joined: Sat Jun 14, 2014 9:33 am
Location: Singapore (1.3N, 103.7E)
Has thanked: 1446 times
Been thanked: 1423 times

Re: Today's Big Prom! HA | March 12th 2019

Post by yltansg »

Hi Marty,

Great shots. Liked the Hi-res surface and proms.

You mentioned equipment - C8 Edge HD SCT + Aires 200mm Tri-Band D-ERF Quark Chromosphere ASI174MM + 0.5x Focal Reducer PST


Q1. Can you show a photo of the optical train? AIRES D-ERF + C8 + PST etalon + ??
Q2. Where do you put in spacers and what size?
Q3. Which brand x0.5 focal reducer do you use?
Q4. Did you use a Baader UV/IR Block filter? Where did you place it?

Thanks.

Alfred


User avatar
MalVeauX
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 1858
Joined: Tue May 09, 2017 7:58 pm
Location: Florida
Has thanked: 1171 times
Been thanked: 1360 times

Re: Today's Big Prom! HA | March 12th 2019

Post by MalVeauX »

yltansg wrote: Wed Mar 13, 2019 1:49 pm Q1. Can you show a photo of the optical train? AIRES D-ERF + C8 + PST etalon + ??
Q2. Where do you put in spacers and what size?
Q3. Which brand x0.5 focal reducer do you use?
Q4. Did you use a Baader UV/IR Block filter? Where did you place it?
Hi Alfred,

I didn't use the PST etalon in this setup with the C8 this time (I do sometimes), but I imaged the full disc with the PST, so I'll show every configuration I have a picture of to help sort it out.

Q1;A1

Here's the basic configuration. Items from left to right are: ASI174MM -> Blue Fireball 2" 0.5" Spacer (12mm) -> 2" GSO 0.5x Focal Reducer -> Quark Chromosphere -> 2" 35mm Extension with a Baader 2" UV/IR Block Filter on the nose -> Crayford Focuser -> C8 Edge HD -> Aires 200mm Tri-band D-ERF
C8Edge_DERF_ST80_02212019.jpg
C8Edge_DERF_ST80_02212019.jpg (33.24 KiB) Viewed 2103 times
Simple imaging train up close:
focuser_C8Edge.jpg
focuser_C8Edge.jpg (32.99 KiB) Viewed 2103 times
Here's the same train, with the Edge 0.7x focal reducer if needed:
Quark_EdgeFocalRecuer_Crayford.jpg
Quark_EdgeFocalRecuer_Crayford.jpg (71.41 KiB) Viewed 2103 times
Here's if I want to insert the PST etalon with the adapters (adapters from Swiss AOK) (collimating lenses removed from etalon) and use the Edge 0.7x reducer as well as the 0.5x focal reducer together in one big train:

From left to right: ASI174MM -> 2" 0.5" extension (12mm) -> GSO 2" 0.5x focal reducer -> PST Rear Adapter -> PST Etalon -> PST front adapter -> Quark with 2" eyepiece holder -> 2" 35mm Extension with 2" Baader UV/IR Block filter -> Crayford Focuser -> Edge 0.7x Focal Reducer -> C8 Edge HD -> Aires 200mm Tri-band D-ERF
200mm_DoubleStack_Quark_PST_5xFR_7xFR.jpg
200mm_DoubleStack_Quark_PST_5xFR_7xFR.jpg (34.85 KiB) Viewed 2103 times
Q2;A2

I put a 2" 0.5x (12mm) spacer between the ASI174MM and the GSO 2" 0.5x focal reducer. In this configuration, it's not a true 0.5x reduction as this causes vignetting and it has to be placed farther from the sensor to truly achieve 0.5x reduction. However, it reduces it enough to increase the FOV and speed up the imaging focal-ratio and reduce imaging scale enough (my Quark puts my system to F42 immediately, from there I drop it with the 0.5x focal reducer, or a combination of the Edge 0.7x focal reducer and a 0.5x focal reducer as needed depending on what I'm doing). The 2" 35mm extension you see inserted into the crayford focuser is only there to hold a Baader 2" UV/IR block filter as 2nd ERF. A shorter extension could be used no problem.
HighRes_FocalReducer_12mmExtension.jpg
HighRes_FocalReducer_12mmExtension.jpg (34.49 KiB) Viewed 2103 times
Q3;A3

I use a basic GSO 2" 0.5x Focal Reducer, I have both the 1.25" and 2" versions. They're fine. I just change which I use based on trying to eliminate as much vignetting as I can.

Q4;A4

I do! I use a standard Baader 2" UV/IR block filter. It's on the nose of the 2" 35mm extension that is inserted into the crayford focuser directly, it's sole purpose is to hold that filter. This is the 2nd ERF to further cut down any heat. You could use a Baader HA 35nm filter in its place for even better heat reduction. Or if doing another wavelength, switch to a Baader 2" Blue CCD filter (for CaK as 2nd ERF).

++++++++++++++++++++++
++++++++++++++++++++++

And lastly, here's the D-ERF itself and the cell holder was fabricated to its specification by Teleskop Service (out of Germany). They do a perfect custom job for a reasonable price. The cell holder is felt lined so the D-ERF only touches soft surfaces. The filter is placed in a machined holding cell and a retaining threaded ring then threads down to secure it in place, just like standard filters. All surfaces touching the filter and the telescope are felt lined. Very satisfied with how they machined this, top notch quality.
D-ERF_01.jpg
D-ERF_01.jpg (94.3 KiB) Viewed 2103 times
D-ERF_02.jpg
D-ERF_02.jpg (103.85 KiB) Viewed 2103 times
D-ERF_03.jpg
D-ERF_03.jpg (80.08 KiB) Viewed 2103 times
Very best,


User avatar
MAURITS
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 8507
Joined: Tue Nov 27, 2018 4:37 pm
Location: Belgium
Has thanked: 2412 times
Been thanked: 4787 times
Contact:

Re: Today's Big Prom! HA | March 12th 2019

Post by MAURITS »

VERY nice setup Marty, all well thought purchased..


Regards,
Maurits

Vista del Cielo Observatory

www.vistadelcielo.be
User avatar
yltansg
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 2798
Joined: Sat Jun 14, 2014 9:33 am
Location: Singapore (1.3N, 103.7E)
Has thanked: 1446 times
Been thanked: 1423 times

Re: Today's Big Prom! HA | March 12th 2019

Post by yltansg »

Thank you very much Marty. You have answered all my questions.

Alfred


User avatar
marktownley
Librarian
Librarian
Posts: 42274
Joined: Tue Oct 18, 2011 5:27 pm
Location: Brierley Hills, UK
Has thanked: 20442 times
Been thanked: 10247 times
Contact:

Re: Today's Big Prom! HA | March 12th 2019

Post by marktownley »

Love the photos of the setup Marty


Image
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
User avatar
MalVeauX
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 1858
Joined: Tue May 09, 2017 7:58 pm
Location: Florida
Has thanked: 1171 times
Been thanked: 1360 times

Re: Today's Big Prom! HA | March 12th 2019

Post by MalVeauX »

I have finally insulated everything with reflectix this afternoon!

Image

Image

Image

Very best,


User avatar
marktownley
Librarian
Librarian
Posts: 42274
Joined: Tue Oct 18, 2011 5:27 pm
Location: Brierley Hills, UK
Has thanked: 20442 times
Been thanked: 10247 times
Contact:

Re: Today's Big Prom! HA | March 12th 2019

Post by marktownley »

Cool! I had wondered about doing something similar myself. BTW I get my adaptor plates made by Telescope service in Germany too.


Image
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
User avatar
MalVeauX
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 1858
Joined: Tue May 09, 2017 7:58 pm
Location: Florida
Has thanked: 1171 times
Been thanked: 1360 times

Re: Today's Big Prom! HA | March 12th 2019

Post by MalVeauX »

marktownley wrote: Thu Mar 14, 2019 6:57 am Cool! I had wondered about doing something similar myself. BTW I get my adaptor plates made by Telescope service in Germany too.
I'm considering contacting them to see if they can make me an additional adapter to add to my current filter cell so that it could be used on a 6 inch aperture too, to be universally useful and secure. Not sure how to implement. But something that contacts the cell so that the front of the OTA isn't touching the filter in the 8 inch cell. A contact plate basically, with longer nylon screws maybe. Hrm....

Very best,


User avatar
marktownley
Librarian
Librarian
Posts: 42274
Joined: Tue Oct 18, 2011 5:27 pm
Location: Brierley Hills, UK
Has thanked: 20442 times
Been thanked: 10247 times
Contact:

Re: Today's Big Prom! HA | March 12th 2019

Post by marktownley »

I don't think the diameter of the 152 fracs dew shield will be much behind that of the 8" scope. Longer screws would work, you could even drill and tap three holes on the dew shield on the frac so the nylon bolts screw securely into place.


Image
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
User avatar
MalVeauX
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 1858
Joined: Tue May 09, 2017 7:58 pm
Location: Florida
Has thanked: 1171 times
Been thanked: 1360 times

Re: Today's Big Prom! HA | March 12th 2019

Post by MalVeauX »

marktownley wrote: Thu Mar 14, 2019 7:48 pm I don't think the diameter of the 152 fracs dew shield will be much behind that of the 8" scope. Longer screws would work, you could even drill and tap three holes on the dew shield on the frac so the nylon bolts screw securely into place.
Hrm,

Good point. I don't use my dew shield other than to store the scope. I worry the dew shield wouldn't hold a 4.5lb weight like that D-ERF on the tip like that. But, it's an idea to check things out! Or maybe an adapter that fits like the dew shield.... hrm...

Very best,


Astrophil
Almost There...
Almost There...
Posts: 903
Joined: Thu Dec 20, 2018 2:00 am
Been thanked: 581 times

Re: Today's Big Prom! HA | March 12th 2019

Post by Astrophil »

Very fine solar images, Marty. I like the looks of the equipment as well. Your setup is coming along well. All you need is more steady skies.

Phil


User avatar
MAURITS
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 8507
Joined: Tue Nov 27, 2018 4:37 pm
Location: Belgium
Has thanked: 2412 times
Been thanked: 4787 times
Contact:

Re: Today's Big Prom! HA | March 12th 2019

Post by MAURITS »

marktownley wrote: Thu Mar 14, 2019 7:48 pm I don't think the diameter of the 152 fracs dew shield will be much behind that of the 8" scope. Longer screws would work, you could even drill and tap three holes on the dew shield on the frac so the nylon bolts screw securely into place.
This is my D-ERF (160mm) 150mm scope solution from the same factory in Germany (Teleskop Service) and this is VERY FINE machined and inside complete black felt lined.
The inside diameter is according my dewshield 204 mm.
The filtercell is heavy and with the D-ERF inside it has some weight in the scale ... hence the 3 plastic safety screws.
All they need is the exact measured diameter from the D-ERF and the outside diameter from the dewshield.

DSCN5971 klein.jpg
DSCN5971 klein.jpg (482.05 KiB) Viewed 1934 times
IMG_20190315klein.jpg
IMG_20190315klein.jpg (302.11 KiB) Viewed 1927 times
IMG_20190215 klein.jpg
IMG_20190215 klein.jpg (244.44 KiB) Viewed 1934 times
IMG_20190225 klein.jpg
IMG_20190225 klein.jpg (357.98 KiB) Viewed 1906 times


Regards,
Maurits

Vista del Cielo Observatory

www.vistadelcielo.be
Post Reply