Can I double stack Quark + Lunt LS50THa?

Use this section to discuss "standard" Baader/Coronado/ Lunt SolarView/ Daystar, etc… filters, cameras and scopes. No mods, just questions/ answers and reviews.
Post Reply
teldar_paper
The Sun?
The Sun?
Posts: 4
Joined: Sun Sep 03, 2017 10:55 pm

Can I double stack Quark + Lunt LS50THa?

Post by teldar_paper » Sun Sep 03, 2017 11:14 pm

I have the Lunt LS50THa with B400, I thought I could solve 3 problems:

1. See more disk detail
2. Have a bigger blocking filter for imaging
3. Let me use more comfortable, longer focal length eyepieces (right now I have to use uncomfortable 4mm Plossls for high mag)

by getting a Quark Chromosphere as a double stack unit.

From what I'm read online, I just have to replace the B400 with a regular diagonal & put the Quark in it... anything wrong this plan?

User avatar
_Zakalwe
Ohhhhhh My!
Ohhhhhh My!
Posts: 177
Joined: Sun Mar 23, 2014 7:54 am

Re: Can I double stack Quark + Lunt LS50THa?

Post by _Zakalwe » Fri Sep 08, 2017 10:52 am

It will be extremely dim for a start. I tried once with a Lunt 60 and it didn't work.

User avatar
marktownley
Librarian
Librarian
Posts: 27113
Joined: Tue Oct 18, 2011 5:27 pm
Location: Brierley Hills, UK
Contact:

Re: Can I double stack Quark + Lunt LS50THa?

Post by marktownley » Sun Sep 10, 2017 9:04 pm

Try it and see what happens
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!

teldar_paper
The Sun?
The Sun?
Posts: 4
Joined: Sun Sep 03, 2017 10:55 pm

Re: Can I double stack Quark + Lunt LS50THa?

Post by teldar_paper » Tue Sep 12, 2017 7:48 pm

I had to fiddle with a few extension tubes/diagonals to get it to focus, but looking through it at 100x magnification was awesome! I can't imagine that the "native" front-mounted DS etalon could be much better than this. I'll still have to get the feathertouch/moonlite focuser to better handle the added weight of the Quark.

User avatar
daslolo
Ohhhhhh My!
Ohhhhhh My!
Posts: 58
Joined: Fri Feb 07, 2020 1:17 am

Re: Can I double stack Quark + Lunt LS50THa?

Post by daslolo » Thu Feb 20, 2020 9:06 am

teldar_paper wrote:
Tue Sep 12, 2017 7:48 pm
I had to fiddle with a few extension tubes/diagonals to get it to focus, but looking through it at 100x magnification was awesome! I can't imagine that the "native" front-mounted DS etalon could be much better than this. I'll still have to get the feathertouch/moonlite focuser to better handle the added weight of the Quark.
extensionS and diagonalS
does it look like this in the end?
Image
PST on its way to modding heaven
Quark + Orion 120mm + beloptik
LX65 8" ACF

User avatar
Astrograph
Im an EXPERT!
Im an EXPERT!
Posts: 202
Joined: Tue Aug 05, 2014 1:00 pm
Location: London
Contact:

Re: Can I double stack Quark + Lunt LS50THa?

Post by Astrograph » Thu Feb 20, 2020 11:25 am

You can make it work sometimes and sometimes not. It depends on how lucky you are with the two filters being compatible with each other. I did once combine a Quark and a Quantum to see what it was like. The contrast in the bit of the sun I could see was amazing but it was not a practical solution. Its actually a negative for imaging. You will find a very small field that is well corrected but because the image is so dim, exposure time has to be quite long and ultimately causes blur when you stack frames.

User avatar
Valery
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 3402
Joined: Sun Nov 18, 2012 3:13 pm

Re: Can I double stack Quark + Lunt LS50THa?

Post by Valery » Sat Feb 22, 2020 11:26 am

All depends of both etalons transmission % and blocking filter transmission. The brighter the images in your LS50THa and Quark 0 the better.

I got both LS50THa PT and Quark. DS works extremely well.


Valery
"Solar H alpha activity is the most dynamic and compelling thing you can see in a telescope, so spend accordingly." (c) Bob Yoesle.

Largest full size 185 - 356mm Dielectric Energy Rejection Filters (D-ERF) by ARIES Instruments.

Marcus444
Oh, I get it now!
Oh, I get it now!
Posts: 29
Joined: Sat Sep 12, 2015 5:11 pm

Re: Can I double stack Quark + Lunt LS50THa?

Post by Marcus444 » Sat Feb 22, 2020 2:26 pm

I’ve tried using a Quark with both Lunt LS50 and LS60 and had no joy whatsoever. Far too dim and murky, yet I get bright and excellent results with standard double stack filters and binoviewer. As mentioned, must just be down to incompatibility.
Lunt LS60THa, 60FHa
Quark Chromosphere
Baader Herschel wedge
Tak FC-100, TV85

Post Reply