Search found 35 matches

by SimonM
Mon Jan 25, 2021 9:14 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Comparing a Quark with another solar scope "solution"
Replies: 6
Views: 61

Re: Comparing a Quark with another solar scope "solution"

Hi Simon, Whether the Quark gives a result as good as a dedicated solar scope really does depend on the Quark lottery, get a good one then yes, but, there are plenty that are not, as you know! Can you get Simon @ WS to send you a replacement to see how you get on with it? Post yours back and let hi...
by SimonM
Mon Jan 25, 2021 9:09 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Comparing a Quark with another solar scope "solution"
Replies: 6
Views: 61

Re: Comparing a Quark with another solar scope "solution"

Whether the Quark gives a result as good as a dedicated solar scope really does depend on the Quark lottery, get a good one then yes, but, there are plenty that is not, as you know! Can you get Simon @ WS to send you a replacement to see how you get on with it? Post yours back and let him deal with...
by SimonM
Mon Jan 25, 2021 8:37 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Comparing a Quark with another solar scope "solution"
Replies: 6
Views: 61

Re: Comparing a Quark with another solar scope "solution"

If I were you I would just buy a Coronado PST, nice and cheap, 5 seconds to set up and just go with it, learn to view Halpha with it. Everyone forgets the humble PST for some reason. It was the first scope I bought and it is always the first scope of choice when solar observing. I own loads of fanc...
by SimonM
Mon Jan 25, 2021 9:26 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Readily Available Long Focal Length Refractors
Replies: 9
Views: 116

Re: Readily Available Long Focal Length Refractors

Mark

What is the use-case for needing such a long refractor?

Seeing conditions (mostly), location, and storage considerations too?

Simon
focal length.pdf
(181.19 KiB) Downloaded 8 times
by SimonM
Sun Jan 24, 2021 11:11 pm
Forum: Solar Scope Modifications
Topic: Advices needed on doublestacking Daystar Quark Chrom and PST Etalon
Replies: 12
Views: 279

Re: Advices needed on doublestacking Daystar Quark Chrom and PST Etalon

It may be obvious to others, but not to me! In the images above e.g. ar_comparison.png for Quark -5 to 0 to +3 What is the cause of the vertical bands when the Quark is off-tune? In the image using the flat e.g. 052813_20210123_Sun_L_pipp_lapl6_ap72.png What is the reason for the circular patterns t...
by SimonM
Sun Jan 24, 2021 10:00 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Comparing a Quark with another solar scope "solution"
Replies: 6
Views: 61

Comparing a Quark with another solar scope "solution"

As some of you know I recently dipped my toe into the solar space, with the purchase of a Quark. It hasn't quite worked out as I hoped they would. I have a PSU that gives a mild electric "buzz" shock and a Quark that transmits this to my hand and/or cheek. I also have a line show up smack in the mid...
by SimonM
Sun Jan 24, 2021 9:01 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Readily Available Long Focal Length Refractors
Replies: 9
Views: 116

Re: Readily Available Long Focal Length Refractors

Help me out here. I'm trying to find readily available, affordable, long focal length refractors. Most stop at 1200mm focal length. Are you looking for a long focal length or just a higher focal ratio? I'm guessing that the market produces what sells in quantity and for much beyond 1200mm it is the...
by SimonM
Sun Jan 24, 2021 8:53 pm
Forum: Sunlit Earth
Topic: Just before sunset and the cloud problem
Replies: 3
Views: 38

Re: Just before sunset and the cloud problem

Beautiful clouds, part of the beauty of sunsets are when the clouds turn a glorious colour Keep the ivy, I vote to leave it alone. It does no harm on the trunk, what it does do is provide homes for wildlife. There will be a huge diversity of insects living there and hibernating, birds snuggled up t...
by SimonM
Sat Jan 23, 2021 5:44 pm
Forum: Sunlit Earth
Topic: Just before sunset and the cloud problem
Replies: 3
Views: 38

Just before sunset and the cloud problem

0.jpg Hi everyone... The view off to one side in my back garden looking across to the south west. It's about 30 minutes before the official sunset, here in Hampshire, UK - tonight. The sun has long since left the garden but the clouds remain illuminated which brings out their 3D qualities. I am rem...
by SimonM
Fri Jan 22, 2021 11:22 pm
Forum: This is SolarChat !!
Topic: Delivery of clouds and WL wedge (h-alpha inbound)
Replies: 25
Views: 316

Re: Delivery of clouds and WL wedge (h-alpha inbound)

We had some sunshine this morning - out with the WL wedge to get my scope aligned to the sun. There was a group of sunspots are clearly visible. Capped scope and then switched over to the Quark. I realize that the WL wedge is close to the focuser being all the way in, but the Quark is exactly in the...
by SimonM
Wed Jan 20, 2021 10:21 pm
Forum: This is SolarChat !!
Topic: Delivery of clouds and WL wedge (h-alpha inbound)
Replies: 25
Views: 316

Re: Delivery of clouds and WL wedge (h-alpha inbound)

I agree - the PSU price is all-important when you buy lots of them!

Very cheap PSU have no RFI filtering. Any UL or CE type markings are "cosmetic" at best.

Simon
by SimonM
Wed Jan 20, 2021 9:38 pm
Forum: This is SolarChat !!
Topic: Delivery of clouds and WL wedge (h-alpha inbound)
Replies: 25
Views: 316

Re: Delivery of clouds and WL wedge (h-alpha inbound)

I agree with what you say. As a whole, it should work and be safe. The PSU introduces the "problem" but the Quark should also protect a user from a "faulty" PSU too. Initially, I thought there was a scratch (scored material) on the etalon, but it only becomes visible when it is illuminated from behi...
by SimonM
Wed Jan 20, 2021 8:56 pm
Forum: This is SolarChat !!
Topic: Delivery of clouds and WL wedge (h-alpha inbound)
Replies: 25
Views: 316

Re: Delivery of clouds and WL wedge (h-alpha inbound)

Please send this back to Simon as a matter of urgency if you've not already. This is not right at all. Suggest a refund or replace... Hi Mark I talked to Simon today. He was chasing DayStar for an update. I had considered what to do next - so perhaps an "expert" can offer guidance: 1. Ask Simon to ...
by SimonM
Tue Jan 19, 2021 11:38 pm
Forum: This is SolarChat !!
Topic: Delivery of clouds and WL wedge (h-alpha inbound)
Replies: 25
Views: 316

Re: Delivery of clouds and WL wedge (h-alpha inbound)

Simon, how goes the Quark checking? Hi Mark - things have been going slowly. I have my mount only roughly polar aligned and then tracking the sun (when it is available, which is not often). I have used the technique often quoted of minimising the shadow of the scope and then centring the back of th...
by SimonM
Tue Jan 19, 2021 10:56 pm
Forum: This is SolarChat !!
Topic: Delivery of clouds and WL wedge (h-alpha inbound)
Replies: 25
Views: 316

Re: Delivery of clouds and WL wedge (h-alpha inbound)

Talking about the dew heater, Quarks working spec is from +5 degree C to +38 degree C and as Mark says you should not need to heat the Quark, that is if you stay within these specs. Last week I was observing in my observatory at -2 Degree C with my very large telescope and as usual the quark takes ...
by SimonM
Sat Jan 16, 2021 11:54 pm
Forum: This is SolarChat !!
Topic: Solar stamps (USA)
Replies: 5
Views: 101

Re: Solar stamps (USA)

The stamps look interesting although I noticed they don’t have values assigned. Would some sunspots be valued more than a prominence etc? I did have a look at the sun yesterday in WL - no obvious sunspots. This morning, I took to adding some sunspots (aka raisins) to my porridge. Early sun quickly d...
by SimonM
Mon Jan 11, 2021 4:52 pm
Forum: This is SolarChat !!
Topic: Delivery of clouds and WL wedge (h-alpha inbound)
Replies: 25
Views: 316

Re: Delivery of clouds and WL wedge (h-alpha inbound)

Firstly I don't think the colour camera will be that good at showing field illumination. The field illumination becomes apparent when you start stacking many images, just like the image increases in resolution so does the illumination. If your QHY shows bad illumination with its small chip then tha...
by SimonM
Sun Jan 10, 2021 6:37 pm
Forum: This is SolarChat !!
Topic: Delivery of clouds and WL wedge (h-alpha inbound)
Replies: 25
Views: 316

Re: Delivery of clouds and WL wedge (h-alpha inbound)

I also have a lot of time for Simon and the Widescreen Centre, I am a regular customer too, however I do not agree with his 2 big issues with a quark. For me, the big issues with quarks is their poor field illumination and ability not to actually get on band at all, at times, in certain units. I ho...
by SimonM
Sun Jan 10, 2021 1:07 am
Forum: Solar Scope Modifications
Topic: How effective is a 0.5x Reducer with a Quark?
Replies: 5
Views: 209

Re: How effective is a 0.5x Reducer with a Quark?

Thanks Rainer I updated the list of specs (see above). With an EP of 40mm I will see as wide a FOV as the Quark can show. About the same from the 36mm for normal use with a scope. I think the issue here will not be how low a magnification can be used, but what are the limitations of the Quark e.g. t...
by SimonM
Sat Jan 09, 2021 10:13 pm
Forum: Solar Scope Modifications
Topic: How effective is a 0.5x Reducer with a Quark?
Replies: 5
Views: 209

Re: How effective is a 0.5x Reducer with a Quark?

I think I found the answer. (reading other threads), a “cheap” 0.5x reducer is probably a complete waste of time e.g. lucky to get anything useful out (and in focus). To aid my understanding, is the size of the blocking filter also the maximum available useful sensor size?
by SimonM
Sat Jan 09, 2021 9:22 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Solar image size affected by focal extenders/reducers
Replies: 9
Views: 335

Re: Solar image size affected by focal extenders/reducers

marktownley wrote:
Fri Dec 04, 2020 6:42 am
You can use the fov calculator here https://astronomy.tools/calculators/field_of_view/ to get an idea of what you'll get.
I use this for general “stuff”, but can this be used without factoring field stops in Etalons and blocking filter sizes?
by SimonM
Sat Jan 09, 2021 9:13 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Prism or mirror diagonal best for solar Ha?
Replies: 22
Views: 342

Re: Prism or mirror diagonal best for solar Ha?

The Lacerta USP is a more effective polarised output but the disadvantage is it is not 90 degrees. So if you look up at the sun, you have to also look up and any perceived advantage is lost by getting an uncomfortable view (neck-ache)? If it doesn’t have the filters required e.g. Solar Continuum and...
by SimonM
Sat Jan 09, 2021 9:02 pm
Forum: Solar Scope Modifications
Topic: How effective is a 0.5x Reducer with a Quark?
Replies: 5
Views: 209

How effective is a 0.5x Reducer with a Quark?

With Quark, I have a small 178 camera for cropped views. My interest is getting a very wide view. Probably best not to use a colour camera with a bigger sensor? How effective is a 0.5x Reducer placed after the Quark: Objective —> UV/IR cut —> 2” diagonal —> Quark (with 4.3x Barlow) —> Reducer —> EP/...
by SimonM
Thu Jan 07, 2021 7:02 pm
Forum: This is SolarChat !!
Topic: Delivery of clouds and WL wedge (h-alpha inbound)
Replies: 25
Views: 316

Re: Delivery of clouds and WL wedge (h-alpha inbound)

Simon, if it helps this is a comment from another vendor (Astrograph) about the Astronomik UV/IR filter vs the Baader, you were not duped https://solarchatforum.com/viewtopic.php?f=10&t=22453&p=206107&hilit=astronomik#p206107 I also don't think I was duped by getting the Astronomik L1 filter and it...
by SimonM
Wed Jan 06, 2021 11:54 pm
Forum: This is SolarChat !!
Topic: PowerMate or Barlow for H-Alpha Video
Replies: 7
Views: 140

Re: PowerMate or Barlow for H-Alpha Video

I start with the wrong equipment to add a Quark for imaging, but it "is what it is"... You have an 80mm f/7.5 scope and a Quark, so you already have about an f/31 "solution" which is recommended. A "slower" scope (focal ratio) will give only a dimmer image and a "faster" scope would not be ideal for...