Quantum 0.4Å PE Filter

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
User avatar
rsfoto
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 6124
Joined: Mon Jun 18, 2012 8:30 pm
Location: San Luis Potosi, México
Has thanked: 9243 times
Been thanked: 5503 times

Quantum 0.4Å PE Filter

Post by rsfoto »

Hi,

After a long wait finally the filter purchased at NEAF 2018 arrived :seesaw

In regard to this I have a setup question. It comes with a 4X power mate from which I can unscrew the optical part and with some rings I have here screw it into the front part of the Quantum.

Now in the back there goes the camera and my question is:

Do I have to respect some fixed distance from the optical part of the PowerMate to the camera chip ?

Thanks and regards Rainer

PS I hope to have some Sun so I can test it this weekend.
IMG_3818_C1.jpg
IMG_3818_C1.jpg (255.28 KiB) Viewed 4221 times


regards Rainer

Observatorio Real de 14
San Luis Potosi Mexico

North 22° West 101°
User avatar
PDB
Almost There...
Almost There...
Posts: 702
Joined: Mon Aug 15, 2016 4:23 pm
Location: Belgium
Has thanked: 2 times
Been thanked: 149 times

Re: Quantum 0.4Å PE Filter

Post by PDB »

Hello Rainer,

hope you will get good testing weather.

Seems distance from powermate to camera does not really influence magnification for the 4x powermate: http://www.televue.com/engine/TV3b_page ... 3&Tab=_app

But it might have impact on focusing. See notes on backfocus: http://www.daystarfilters.com/Quantum/QPEPaperPro.pdf

Paul


User avatar
rsfoto
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 6124
Joined: Mon Jun 18, 2012 8:30 pm
Location: San Luis Potosi, México
Has thanked: 9243 times
Been thanked: 5503 times

Re: Quantum 0.4Å PE Filter

Post by rsfoto »

PDB wrote: Tue Jul 17, 2018 8:33 pm Hello Rainer,

hope you will get good testing weather.

Seems distance from powermate to camera does not really influence magnification for the 4x powermate: http://www.televue.com/engine/TV3b_page ... 3&Tab=_app

But it might have impact on focusing. See notes on backfocus: http://www.daystarfilters.com/Quantum/QPEPaperPro.pdf

Paul
Hi Paul,

Thanks. Is the part below the important one ?
Quantum4X.JPG
Quantum4X.JPG (96.79 KiB) Viewed 4209 times


regards Rainer

Observatorio Real de 14
San Luis Potosi Mexico

North 22° West 101°
User avatar
rsfoto
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 6124
Joined: Mon Jun 18, 2012 8:30 pm
Location: San Luis Potosi, México
Has thanked: 9243 times
Been thanked: 5503 times

Re: Quantum 0.4Å PE Filter

Post by rsfoto »

Hi,

After a while searching in all my Stuff I found some ZWO adapters and I was able to connect the unscrewed from its 2" Nose Piece Holder 4X PowerMate and fitted into the front part of the Quantum. The Mono ZWO camera ASI 1600MM Profits directly into the rear adapter of the Quantum.

I still have 1x one 16.5 mm adapter and 2two 21mm adapters to put in where I have now the 16.5 mm adapter which would equal to 74mm extension, but as far as I understood it is better to keep that as short as possible ?

I could even let machine a shorter adapter between 4X and Quantum instead of that 16.5 mm adapter.

Where I labeled to Telescope I can add a lot of extension tubes and the TOA has 250 mm of rear focus plus a big focuser travel. Tha blacka dapter was made by a friend and that oine fits into my 72 mm Ø Takahashi extension tubes.

I guess I have to play around by adding or taking off extension tubes ...

Am I on the right track ?
IMG_3819_C1_Quantum_4X.jpg
IMG_3819_C1_Quantum_4X.jpg (329.27 KiB) Viewed 4206 times


regards Rainer

Observatorio Real de 14
San Luis Potosi Mexico

North 22° West 101°
User avatar
PDB
Almost There...
Almost There...
Posts: 702
Joined: Mon Aug 15, 2016 4:23 pm
Location: Belgium
Has thanked: 2 times
Been thanked: 149 times

Re: Quantum 0.4Å PE Filter

Post by PDB »

Thanks. Is the part below the important one ?
Looks like. Think you need to experiment to see if you can get into focus depending on camera - powermate distance.

For a Baader Telecentric there seems to be strict rules about distances telecentric - camera (and focus position) to get optimal results. For PowerMates could not find these.

Regards,

Paul


User avatar
rsfoto
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 6124
Joined: Mon Jun 18, 2012 8:30 pm
Location: San Luis Potosi, México
Has thanked: 9243 times
Been thanked: 5503 times

Re: Quantum 0.4Å PE Filter

Post by rsfoto »

Hi Paul,

Thanks for your help. I will contact Daystar and send them the Image and see what they say about it. Saw some Setups here similar to this and nearly all telecentric are directly attached to the Quantum with just an Adapter ring similar to mine.

Hopefully I can test it on my TOA 130 in my Observatory this weekend.


regards Rainer

Observatorio Real de 14
San Luis Potosi Mexico

North 22° West 101°
User avatar
rsfoto
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 6124
Joined: Mon Jun 18, 2012 8:30 pm
Location: San Luis Potosi, México
Has thanked: 9243 times
Been thanked: 5503 times

Re: Quantum 0.4Å PE Filter

Post by rsfoto »

Hi,

I found the Image below on the Website of Daystar and comparing it to my Setup I guess I am on the right track ;)
CCDApplication_quantum.jpg
CCDApplication_quantum.jpg (141.55 KiB) Viewed 4143 times


regards Rainer

Observatorio Real de 14
San Luis Potosi Mexico

North 22° West 101°
FlankerOneTwo
Ohhhhhh My!
Ohhhhhh My!
Posts: 71
Joined: Wed Oct 11, 2017 8:11 pm

Re: Quantum 0.4Å PE Filter

Post by FlankerOneTwo »

I think he means the chart here:

http://www.televue.com/images/TV3_Image ... crease.jpg

It shows very little variation of the 4X with distance - it's a little under 4X at 0mm, seems right on at 25-30, and is maybe 4.4 at 100mm


Post Reply