Return to the Cloudy Nights Telescope Reviews home pageAstronomics discounts for Cloudy Nights members
· Get a Cloudy Nights T-Shirt · Submit a Review / Article

Click here if you are having trouble logging into the forums

Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu… uh, User

Equipment Discussions >> Refractors

Pages: 1
orion61

*****

Reged: 10/20/07

Loc: Birthplace James T Kirk
Thoughts on Orion V Block Filter
      #5527602 - 11/19/12 10:06 AM

I am wondering If I can get a cross section of members opinions on the V-Block filter? I did read the review here but would like to see the "General" feeling after the filter, has been around a few years.
Are prople still useing them? Are they as advertised, and do the coatings last.
To circumvent the inevitable dogging of Acros by those of you who have the means of affording 2-8k APO refractors, please, I know the performance difference, I know yours is much better, and there will be some who believe Acros are not worth having, Not interested in that story.
But I have what I have, and my Childs future is more important than spending what we have on a Tak, or TMB, TeleVue etc.
Are V-Block filters worth buying?
I have a prototype Celestron 127mm Acromat, we all know they chose the 6". I also have an outstanding MINT, mid 80's Celestron/Vixen C80 F11. I cant imagine a better "corrected" lens figure wise, except C.A.
Still 5" of glass can see a lot. Worth buying? From what I have seen, its either yes or an absolute NO..
Thanks for taking the time reading this, and replying.
LB


Post Extras: Print Post   Remind Me!   Notify Moderator  
russell23
Post Laureate
*****

Reged: 05/31/09

Loc: Upstate NY
Re: Thoughts on Orion V Block Filter new [Re: orion61]
      #5527638 - 11/19/12 10:29 AM

Yes, But I would recommend the Baader Fringe Killer. I have one permanently mounted on the diagonal for my Vixen 140 neo-achro refractor. It noticeably sharpens the star images allowing me to get tight pinpoint stars at much higher magnification than without the filter. It also cleans up the overall light quality of the field - higher definition if you will.

I see no obvious loss of light when using the filter.

I've tried the Orion V-block filter. I think the Baader Fringe Killer is a much better filter. The color shift in the Baader filter is milder than in the V-block.

Dave


Post Extras: Print Post   Remind Me!   Notify Moderator  
astrogeezer41
super member
*****

Reged: 08/27/10

Re: Thoughts on Orion V Block Filter new [Re: russell23]
      #5527696 - 11/19/12 11:02 AM

Dave,
I very much agree with what you say about the Baader Fringe Filter. I use one with my ES AR102 and get the same results that you speak of.

I have an Orion V-block but it gives a much greater color shift and dims objects more, probably because it was originally intended for an f/5 achromat.

I think that LB would be much happier with the Baader.

-Robert


Post Extras: Print Post   Remind Me!   Notify Moderator  
orion61

*****

Reged: 10/20/07

Loc: Birthplace James T Kirk
Re: Thoughts on Orion V Block Filter new [Re: astrogeezer41]
      #5527703 - 11/19/12 11:05 AM

Thanks Guys for the great info! is there a color shift with the Baader?
whats the cost?
Larry


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

Reged: 01/03/05

Loc: Colorado Springs
Re: Thoughts on Orion V Block Filter new [Re: orion61]
      #5527711 - 11/19/12 11:09 AM

For a 1.25" fringe killer, the cost is only around $4 more than the Orion at OPT.

Post Extras: Print Post   Remind Me!   Notify Moderator  
russell23
Post Laureate
*****

Reged: 05/31/09

Loc: Upstate NY
Re: Thoughts on Orion V Block Filter new [Re: orion61]
      #5527743 - 11/19/12 11:27 AM

Quote:

Thanks Guys for the great info! is there a color shift with the Baader?
whats the cost?
Larry




Color shift is very mild with the Fringe Killer. Even on the Moon I hardly notice it. If you hold up the Fringe Killer and look through it in daylight you see a mild color effect. I've compared at night with and without the filter and the color shift is very minor for lunar/planetary and inconsequential for deep sky. I still see nice rich star colors when looking at star clusters. The Orion V-block was very different. It had a much stronger color shift that was easily detectable. I didn't like it myself.

If you were worried about color shift you could go with the Baader semi-Apo filter, but the semi-apo achieves color neutrality by reducing additional wavelengths in the yellow/green part of the spectrum. I did feel there was some image dimming with the semi-apo filter.

Dave


Post Extras: Print Post   Remind Me!   Notify Moderator  
astrogeezer41
super member
*****

Reged: 08/27/10

Re: Thoughts on Orion V Block Filter new [Re: russell23]
      #5528003 - 11/19/12 01:39 PM

The color shift of the Baader Fringe Filter is to the pale yellow. It's not bad at all and only seems (to me) to be noticeable on the Moon, Venus, and Jupiter. I do not notice any color shift on the many double stars that I like to observe whether they be white, red, blue, orange, yellow, etc.

I personally do not care for the semi-apo filter. It does too much for my taste.

Hope this helps,
Robert


Post Extras: Print Post   Remind Me!   Notify Moderator  
russell23
Post Laureate
*****

Reged: 05/31/09

Loc: Upstate NY
Re: Thoughts on Orion V Block Filter new [Re: astrogeezer41]
      #5528084 - 11/19/12 02:28 PM

Quote:

The color shift of the Baader Fringe Filter is to the pale yellow. It's not bad at all and only seems (to me) to be noticeable on the Moon, Venus, and Jupiter. I do not notice any color shift on the many double stars that I like to observe whether they be white, red, blue, orange, yellow, etc.

I personally do not care for the semi-apo filter. It does too much for my taste.

Hope this helps,
Robert




I agree with you Robert. I think the semi-Apo filter does too much. But I know some people don't want even the slightest color shift that the Fringe Killer gives. For me the Fringe Killer is perfect.

Dave


Post Extras: Print Post   Remind Me!   Notify Moderator  
David PavlichAdministrator
Transmographied
*****

Reged: 05/18/05

Loc: Mandeville, LA USA
Re: Thoughts on Orion V Block Filter new [Re: orion61]
      #5528307 - 11/19/12 04:11 PM

I had better luck with the William Optics minus Violet filter. The Orion induced too much of a yellow cast.

David


Post Extras: Print Post   Remind Me!   Notify Moderator  
dlapoint
scholastic sledgehammer


Reged: 08/18/03

Loc: Moncton NB Canada
Re: Thoughts on Orion V Block Filter new [Re: David Pavlich]
      #5528372 - 11/19/12 04:45 PM

There are a lot of some what negative comments on the V block. I've used it on 3 different scopes. 127 f6.5, 152 f5.9 and 420 f6 I found it behaved differently on all 3 scopes. With the 152 achro is seems to work really, really well, with little color shift. One the 127 it did not do as well and turned everything really yellow. The third scope was the same as the last. I think it goes by how the scope was corrected in the first place.

Post Extras: Print Post   Remind Me!   Notify Moderator  
m9x18
Pooh-Bah


Reged: 10/12/07

Loc: Abilene, Texas USA
Re: Thoughts on Orion V Block Filter new [Re: dlapoint]
      #5528460 - 11/19/12 05:44 PM

Quote:

I think it goes by how the scope was corrected in the first place.




In addition to that, most observers will notice a color bias to any given lens. Some lenses are biased toward the warm, some toward the cool and others that lean toward neutral. Adding any kind of filter to a scope will introduce its own effects depending on different factors. I imagine the results will vary from lens to lens.


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

Reged: 05/26/09

Loc: SW Ohio
Re: Thoughts on Orion V Block Filter new [Re: m9x18]
      #5535372 - 11/23/12 12:14 PM

I have both the Baader Semi-Apo and the Orion V-block. Like another poster said, different filters for different scopes. I only use them on planets, and I've found with the 120mm F/8 the V-block is the better filter. It does a great job on Jupiter...dimming the planets glare a bit and sharpening details. It did likewise for Mars.

Post Extras: Print Post   Remind Me!   Notify Moderator  
Rustie
super member
*****

Reged: 04/07/05

Loc: Southampton, UK
Re: Thoughts on Orion V Block Filter new [Re: caheaton]
      #5704947 - 02/28/13 09:13 AM

Been looking to get a filter for my SW 102 F5. Up to now i have used a light yellow filter which eradicates all CA but at the expense of a strong colour shift. By removing the CA is does help see some finer detail and i've been mightily impressed how well the 102 holds high power. Our C6 beats it no problem but the C6 is not smaller enough or robust enough for a family holiday.
So after days of trawling through endless reviews i am absolutely no wiser then when i started.
Some people say the yellow filter i have now is better than any of the dedicated MV filters. Others say the Semi-Apo is best. While other threads, like this one, say the Fringe Killer rules. I think my head is going to explode....lol
At the moment i'm worried these filters are just glorified yellow filters at 4x the price.


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

Reged: 11/13/08

Loc: Lake County Illinois
Re: Thoughts on Orion V Block Filter new [Re: Rustie]
      #5712659 - 03/04/13 02:37 PM

I think I've tried them all. The Orion V block is a 'strong' filter and is needed for something like my 100 F5 achro. I use the 'Fringe Killer on my 127 F6.5 achro.

BUT they both work better when coupled with a gray or 50% ND filter.


Post Extras: Print Post   Remind Me!   Notify Moderator  
Rustie
super member
*****

Reged: 04/07/05

Loc: Southampton, UK
Re: Thoughts on Orion V Block Filter new [Re: oldtimer]
      #5713869 - 03/05/13 05:09 AM

Many thanks the info. The Orion V Block just happens to be the cheapest option here in the UK, which is strange as Orion bits tend to be pricey. I already have an ND 4 filter, so will combine that with the V Block when it arrives.
Thanks again.


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

Reged: 11/13/08

Loc: Lake County Illinois
Re: Thoughts on Orion V Block Filter new [Re: Rustie]
      #5717251 - 03/06/13 08:48 PM

The ND4 filter is probably too strong. I would experiment with one that reduces brightness by 25 to 50%

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


Extra information
37 registered and 48 anonymous users are browsing this forum.

Moderator:  Scott in NC, FirstSight, panhard, star drop 

Print Thread

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


Thread views: 1538

Jump to

CN Forums Home


Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics