nebula filters

asimov (John) · #1 01-07-2005, 07:39 PM

Sorry if this has been discussed before in here, but I have very dark skies where I live, just wondering if a nebula filter would be of any benefit to me?

Thanks.

atalas · #2 01-07-2005, 07:57 PM

Hi John, yes mate It will still make a huge difference on nebs !

Louie

ballaratdragons (Ken) · #3 01-07-2005, 08:09 PM

Unlike a Moon filter which kills everything except the Moon.

I should know! I accidently leave mine in after Mooning on a regular basis and keep wondering why I can't see anything LOL!!

dhumpie · #4 01-07-2005, 08:16 PM

Hi John,

They make a big difference in the intricate detail you can see, both from the suburbs and from dark sky sites. I would recommend bypassing SkyGlow and broadband nebular filters (i.e. Orion SkyGlow and Lumicon Deep Sky filter) as they are more useful for photography from the burbs and are of limited use for visual astronomy. For general visual use the UHC filters (i.e. Lumicon UHC, Orion Ultrablock, Astronomiks UHC) are the best. For specific uses (i.e. planetary nebula's and supernova remnants) the OIII filters are the best. For a more indepth read see:
http://www.cloudynights.com/item.php...d=63&pr=2x9x42

Hope that helps.

Darren

asimov (John) · #5 01-07-2005, 08:27 PM

Yes guys, that helps.. Thanks for your quick replys!

dhumpie · #6 01-07-2005, 08:30 PM

Hey John,

If you are thinking of getting UHC or OIII filters, the current recommendation is for Astronomiks filters. Ask John Bambury and he will give you the details

Darren

ballaratdragons (Ken) · #7 01-07-2005, 08:32 PM

I am going to try those yellow night driving glasses as someone in our society said it brightens some objects. Interesting!

Darren, your location in the upper right of your posts say 'Brisbane'. I thought you moved to Hong Kong.

asimov (John) · #8 01-07-2005, 09:20 PM

TY Darren.

dhumpie · #9 02-07-2005, 12:20 AM

I think you got me mixed up with someone else

I'm from Malaysia.....

Darren

asimov (John) · #10 02-07-2005, 12:29 AM

SHoooWeee! Those filters are DEAR! How bout a Baader? their a lot cheaper....?

ballaratdragons (Ken) · #11 02-07-2005, 12:34 AM

Sorry Darren, I must have.

John, Andrews sells fairly cheap filters but I don't know the quality.

Here is a great site about which filters to use though

http://sciastro.net/portia/advice/filters.htm

asimov (John) · #12 02-07-2005, 12:59 AM

AOE seems to be the cheapest by the looks......but they only sell Baader, anyone know of the quality of these?

RAJAH235 · #13 02-07-2005, 12:59 AM

Are you looking at the 1 1/4" ?? They're cheap at around $190.00. Oh, if you have 2" E/Pcs.,they're around $500.00 & beyond!!!
If you have dark skies then you'll find the UHC & the OIII best.

L.
ps. Check Astronomik & Lumicon @ Bintel for quality filters.

asimov (John) · #14 02-07-2005, 01:05 AM

Thanks for the link Ken. Very informative.
L $119 at AOE for the baader 1.25" UHC

RAJAH235 · #15 02-07-2005, 01:18 AM

That's a good price for a UHC. What's the quality like? Anyone.

L.

asimov (John) · #16 02-07-2005, 01:31 AM

I'll have to go in search of some comparison reviews I think. I've been caught out a few times now by purchasing second-rate accessories.

RAJAH235 · #17 02-07-2005, 02:02 AM

This site has them for $90 > UHC & $94 > OIII. US $ of course.
http://www.alpineastro.com/
http://www.alpineastro.com/product_listing.htm#filters
http://www.dracoproductions.net/faq.htm
http://www.astronomy.net/forums/eyepieces/
Check out the forum.
HTH.

L.

asimov (John) · #18 02-07-2005, 02:21 AM

found: http://www.excelsis.com/1.0/entry.ph...=26&entryid=32

cristian abarca · #19 02-07-2005, 09:05 AM

John I have a Sirius optics nebulae 1 filter and it works pretty well on my little scope. I was told that this filter is good for planetaries as well as nebulas where as others are only good for nebulas. My scope is dark anyway so it doesn,t do this filter justice. I can still see the difference though. I think through a better scope you would be able to really tell the difference. Ibought it from melbourne for $125 1.25". But I think that Telescope and Astronomy in South Australia sell them cheaper. I got an IR Baader filter for $85 for my webcam. Their website is www.telescope-astronomy.com.au

Regards Cristian

astro_south (Andrew) · #20 02-07-2005, 09:10 AM

John

Tonight I hope to test out my new 2" NEB1 filter. It does similar things to a UHC, with subtle differences in the bandpass. I also have a Lumicon 1.25" UHC (a reason I wanted something slightly different). The NEB1 is from Sirius Optics (USA) and I purchased it from Andrews. It is cheaper than other filters as the coatings aren't laminated between two pieces of glass, rather the coatings are exposed on one side of the filter (the side that ends in the eyepiece when the filter is in place). Obviously much more care needs to be taken with these filters, but part of the idea is to improve the view by removing the extra glass.

I will get back to you with how it performed after tonight - fingers crossed