Return to the Cloudy Nights Telescope Reviews home page


Observing >> Solar Observing and Imaging

Pages: 1
Gert K A
sage


Reged: 07/16/12

Loc: Copenhagen, Denmark
A question or two about solar filters new
      #5653571 - 01/31/13 03:19 AM

Iím considering to try a bit of solar observing or at least to have the option to
Iím looking to buy my first solar filter for my tiny 50mm refractor.
Iím at the time looking at these:
Thousand Oaks
Orion

Which is better, is there any difference between these, are there better ones?

Also is it ďenoughĒ just to plug one of these on your scope, or is other equipment needed, for safety or details.. filters, diagonals?

Any help would be greatly apreciated


Post Extras: Print Post   Remind Me!   Notify Moderator  
Matt Wastell
Carpal Tunnel


Reged: 07/05/09

Loc: Paddington, Brisbane, Australi...
Re: A question or two about solar filters new [Re: Gert K A]
      #5653594 - 01/31/13 04:18 AM

Hi Gert
I have a thousand oaks filter and it is good wide field views with my 90mm.
I have heard that bader film is a much better option - I have no experience with the film but I am sure others will post their views.
I also believe you will not need any other equipment, suitable filter and go. Just be mindful to be safe and remove your finder scope / remove or cover it!


Post Extras: Print Post   Remind Me!   Notify Moderator  
robert_arnold
Post Laureate


Reged: 11/08/05

Loc: Isle of Skye, Scotland
Re: A question or two about solar filters new [Re: Matt Wastell]
      #5653637 - 01/31/13 05:54 AM

Baader astrosolar film is better optically than a glass filter and much cheaper
Robert


Post Extras: Print Post   Remind Me!   Notify Moderator  
Gert K A
sage


Reged: 07/16/12

Loc: Copenhagen, Denmark
Re: A question or two about solar filters new [Re: robert_arnold]
      #5653801 - 01/31/13 08:34 AM

Film just scare me a bit.
Actually the thought of aligning the sun, a lens and my eye scare me a bit, and then the softer material.
I do know a lot of ppl are happy using it and Iím sure there is no issue but it's still kind off scary
How is the film better optically, does it give more detail?


Post Extras: Print Post   Remind Me!   Notify Moderator  
BYoesle
Post Laureate
*****

Reged: 06/12/04

Loc: Goldendale, Washington USA
Re: A question or two about solar filters new [Re: Gert K A]
      #5653936 - 01/31/13 09:44 AM

These types of filters go over the objective, reducing the intensity of the solar image by a factor of 100,000+ X, and are completely safe.

Regarding Baader film - Yes, optically it is better than any float glass solar filter likke the T. Oaks or Orion. It is equivalent to a Zeiss or Questar optical galss filter, but gives a more neutral colored image. It may not last as long (it developes pinholes more easily) , but is easy and cheap to replace. Whether or not you could discern its superiority on a regular basis depends on your local seeing and observing skill.

The only thing significantly better is a Herschel wedge, which is much more expensive, and requires strick adherence to it's use of additional fltering.

See:

http://www.cloudynights.com/item.php?item_id=919

http://www.astro-physics.com/index.htm?products/accessories/solar_acc/astrosolar

Baader solar filter material is available premounted here:

http://www.kendrickastro.com/astro/solarfilters.html


Post Extras: Print Post   Remind Me!   Notify Moderator  
Gert K A
sage


Reged: 07/16/12

Loc: Copenhagen, Denmark
Re: A question or two about solar filters new [Re: BYoesle]
      #5654071 - 01/31/13 10:52 AM

Wow great info, it seems the Baader film trumps it all
very nice thx Bob

So pinholes are present to some degree in all front filters,
do you check every time before use, or does pinholes not represent a safety issue?

btw. I totally love the little Kendrick finder


Post Extras: Print Post   Remind Me!   Notify Moderator  
BYoesle
Post Laureate
*****

Reged: 06/12/04

Loc: Goldendale, Washington USA
Re: A question or two about solar filters new [Re: Gert K A]
      #5654139 - 01/31/13 11:26 AM

Pinholes, even a significant number, don't pose a safety issue - they instead scatter light and decrease contrast. This is why a Herrschel wedge usually proves superior.

Post Extras: Print Post   Remind Me!   Notify Moderator  
Gert K A
sage


Reged: 07/16/12

Loc: Copenhagen, Denmark
Re: A question or two about solar filters new [Re: BYoesle]
      #5654208 - 01/31/13 12:04 PM

Ok that does it then
I will start with the inexpensive Baader film and then later on if gods forbid the sun hooks me
I will look in to getting a Herschel prism and some filters

Thank you for the great help


Post Extras: Print Post   Remind Me!   Notify Moderator  
BYoesle
Post Laureate
*****

Reged: 06/12/04

Loc: Goldendale, Washington USA
Re: A question or two about solar filters new [Re: Gert K A]
      #5654355 - 01/31/13 01:43 PM

Donít ever look through a solar H alpha filter equipped telescope unless youíre prepared to spend a couple of thousand euros.

You will be hooked for sure by the view, which is the most stunning and dynamic view of anything available to amateurs in the heavens.


Post Extras: Print Post   Remind Me!   Notify Moderator  
jerwin
scholastic sledgehammer
*****

Reged: 05/17/12

Loc: Romeoville IL
Re: A question or two about solar filters new [Re: BYoesle]
      #5654523 - 01/31/13 03:20 PM

Quote:

Donít ever look through a solar H alpha filter equipped telescope unless youíre prepared to spend a couple of thousand euros.

You will be hooked for sure by the view, which is the most stunning and dynamic view of anything available to amateurs in the heavens.




I was just going to chime in and mention without looking through an H-alpha scope you're only really seeing sunspots. Sun spots are still pretty cool to look at but you need h-alpha to see prominences and filaments and surface detail. calcium-k can also give good surface detail but I think most people go straight from white light to h-alpha. It will set you back a a few thousand before you realize it.

Jim


Post Extras: Print Post   Remind Me!   Notify Moderator  
Gert K A
sage


Reged: 07/16/12

Loc: Copenhagen, Denmark
Re: A question or two about solar filters new [Re: BYoesle]
      #5654829 - 01/31/13 06:17 PM

Quote:

Donít ever look through a solar H alpha filter equipped telescope unless youíre prepared to spend a couple of thousand euros.

You will be hooked for sure by the view, which is the most stunning and dynamic view of anything available to amateurs in the heavens.




It sound terrible delightful and I bet you are right,
so I will take it easy and start with the film (that was what you guys meant.. Right?)
although now Iím even more intrigued and oh yes I have seen some of the prices on solar gear.
But couldnít you say the same about anything in this hobby? like donít ever look at Saturn in a telescope,
donít ever point a webcam to the Moon, unless you are willing to back it up with cash.

Everything in amateur astronomy seems intent on making you spend, I used to hate shopping, but here not so much.
The better the gear the more gripping the sights, perfection always seems to be just around the corner,
itís addictive in the sense that there is always that next step luring.
Soo If I have learned anything from this hobby, then it is to put it on a budget lol

Still thank you for the warning/temptation I will keep that in mind.


Post Extras: Print Post   Remind Me!   Notify Moderator  
StarStuff1
Post Laureate
*****

Reged: 04/01/07

Loc: South of the Mason-Dixon Line
Re: A question or two about solar filters new [Re: Gert K A]
      #5655561 - 02/01/13 04:06 AM Attachment (11 downloads)

I have used glass and Tuthill Solar Skreen filters for years and have enjoyed the white light views. Then a couple of years ago I finally gave in and bought a Lunt Ha scope. Then a few weeks ago there was some really nice sunspot activity. I had sold my white light scope (an AT66 with Thousand Oaks glass filter) so I dusted off an ancient 60mmm refracter, cleaned it up and made a holder for a piece of Baader film. I had forgotten how nice white light viewing can be sometimes.

Post Extras: Print Post   Remind Me!   Notify Moderator  
Gert K A
sage


Reged: 07/16/12

Loc: Copenhagen, Denmark
Re: A question or two about solar filters [Re: StarStuff1]
      #5655741 - 02/01/13 08:14 AM

Nice low-tech setup you got there, inspiring indeed
Thx for sharing


Post Extras: Print Post   Remind Me!   Notify Moderator  
Aquarist
Pooh-Bah


Reged: 08/27/12

Loc: Illinois
Re: A question or two about solar filters new [Re: BYoesle]
      #5657124 - 02/01/13 09:02 PM

Quote:

Donít ever look through a solar H alpha filter equipped telescope unless youíre prepared to spend a couple of thousand euros.

You will be hooked for sure by the view, which is the most stunning and dynamic view of anything available to amateurs in the heavens.




This warning occurred a bit late for me.


Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1


Extra information
8 registered and 10 anonymous users are browsing this forum.

Moderator:  Scott in NC, Phillip Creed 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled


Thread views: 1309

Jump to

CN Forums Home




Cloudy Nights Sponsor: Astronomics