SolarMax 3 BF Questions (Help)

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
Grakrob778
The Sun?
The Sun?
Posts: 5
Joined: Mon Mar 23, 2020 3:39 am

SolarMax 3 BF Questions (Help)

Post by Grakrob778 » Mon Mar 23, 2020 3:55 am

1.jpg
1.jpg (247.25 KiB) Viewed 337 times
2.jpg
2.jpg (249.86 KiB) Viewed 337 times
3.jpg
3.jpg (217.08 KiB) Viewed 337 times
4.jpg
4.jpg (214.07 KiB) Viewed 337 times
5.jpg
5.jpg (224.67 KiB) Viewed 337 times
6.jpg
6.jpg (172.24 KiB) Viewed 337 times
7.jpg
7.jpg (214.65 KiB) Viewed 337 times
8.jpg
8.jpg (149.33 KiB) Viewed 337 times
Hello and first post here. I need some help. I bought a SM3 90mm scope with a BF15 earlier this month. I decided to go ahead and also order a replacement ITF from Oliver at BelOptik in Germany. Then I decided to inspect the ITF in my current BF15 and found no rust but the diagonal flat appeared to have a coating issue after posting on another site. I asked for a replacement and Meade had one sent to me in two days. At the same time I ordered a SM2 variant BF15 from Woodland Hills site in California. Both came in the same day and I disassembled them all to compare. These are the photos. It appears the free replacement on the far left is identical to the original in the middle, but the SM2 type doesn't look anything like the other two. I did have a chance to compare views today and saw no apparent difference. My question is: Does anyone recognize this and could someone with a SolarMax 3 scope and BF take theirs apart and see if their flat looks like this?

Thank you so much for the help!
Graham

User avatar
marktownley
Librarian
Librarian
Posts: 27113
Joined: Tue Oct 18, 2011 5:27 pm
Location: Brierley Hills, UK
Contact:

Re: SolarMax 3 BF Questions (Help)

Post by marktownley » Mon Mar 23, 2020 8:27 am

Yuck! Those mirrors look filthy, does the detritus come off?
Image
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!

Grakrob778
The Sun?
The Sun?
Posts: 5
Joined: Mon Mar 23, 2020 3:39 am

Re: SolarMax 3 BF Questions (Help)

Post by Grakrob778 » Tue Mar 24, 2020 12:13 am

Pretty sure these are like Bob Y. advised me..grossly deteriorated dielectric coatings.
I removed the flats and shined a flashlight through the back, which is black. You can clearly see the deterioration. On a good note I had a good flat that I placed in the new diagonal. This with the Beloptik ITF should be a rust free and up to standard blocking filter to observe with I hope. Since this condition appears to be new and no one has talked about it, I think all should be warned. If I hadn't spent 700 dollars extra for another I would've been stuck with a substandard filter. I appreciate the fellow above checking his. I'm new to this site but have met Steven one time at my old club. Was hoping he would chime in. Again everyone should be aware of this defect although I'm unsure of the product from such coating failure.
post-181453-0-36004000-1584998128.jpg
post-181453-0-36004000-1584998128.jpg (135.31 KiB) Viewed 276 times
post-181453-0-93377700-1584998116.jpg
post-181453-0-93377700-1584998116.jpg (160.02 KiB) Viewed 276 times
post-181453-0-45344700-1584998051 (1).jpg
post-181453-0-45344700-1584998051 (1).jpg (157.1 KiB) Viewed 276 times
post-181453-0-57742000-1584998017.jpg
post-181453-0-57742000-1584998017.jpg (144.74 KiB) Viewed 276 times
post-181453-0-09744600-1584998318.jpg
post-181453-0-09744600-1584998318.jpg (186.21 KiB) Viewed 276 times

Grakrob778
The Sun?
The Sun?
Posts: 5
Joined: Mon Mar 23, 2020 3:39 am

Re: SolarMax 3 BF Questions (Help)

Post by Grakrob778 » Tue Mar 24, 2020 1:49 am

I will check tomorrow. I get your point now. I have three to test. You mean the 6A sub nanometer filter on the eyepiece side. Understood and thank you. Will post results.

User avatar
marktownley
Librarian
Librarian
Posts: 27113
Joined: Tue Oct 18, 2011 5:27 pm
Location: Brierley Hills, UK
Contact:

Re: SolarMax 3 BF Questions (Help)

Post by marktownley » Tue Mar 24, 2020 2:29 pm

Soft coated dielectric, doesn't surprise me really!
Image
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!

User avatar
DeepSolar64
Almost There...
Almost There...
Posts: 543
Joined: Thu Sep 05, 2019 12:19 am
Location: Edneyville North Carolina U.S.A.

Re: SolarMax 3 BF Questions (Help)

Post by DeepSolar64 » Tue Mar 24, 2020 5:08 pm

When you own a Coronado this is disturbing! I have not noticed anything odd with mine but I am certainly nervous now. I am a bit afraid to take my BF15 apart to look at it. The view is nice and red through the scope.

I was very new to Ha solar astronomy when I bought my scope. If I did it again with what I know now I would certainly go Lunt.

James
Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado AZS Alt/Az Mount
Lunt, Coronado, TeleVue, Orion and Celestron Eyepieces

Grakrob778
The Sun?
The Sun?
Posts: 5
Joined: Mon Mar 23, 2020 3:39 am

Re: SolarMax 3 BF Questions (Help)

Post by Grakrob778 » Tue Mar 24, 2020 11:35 pm

Sub 6A BF15 #1
Sub 6A BF15 #1
15.jpg (129.89 KiB) Viewed 223 times
ZWO 7nm 36mm Ha CCD
ZWO 7nm 36mm Ha CCD
18.jpg (176.49 KiB) Viewed 223 times
ITF BF15 #1
ITF BF15 #1
20.jpg (174.69 KiB) Viewed 223 times
ITF BF15 #1 Case
ITF BF15 #1 Case
19.jpg (139.51 KiB) Viewed 223 times
It appears all sub 6A filters look the same, so I did not post pics of them, but do have them if you want. They appear to leak green/yellow light when compared to the ZWO CCD Ha filter. All ITFs are sealed around the edge. None appear to have rust. After comments I do wonder if I can optimize my scope further by utilizing the CCD filter? Also, I do have a 2" Baader UV/IR mounted filter that I am not using. The Beloptik ITF has yet to arrive. Been almost three weeks now. What do you all think?

Grakrob778
The Sun?
The Sun?
Posts: 5
Joined: Mon Mar 23, 2020 3:39 am

Re: SolarMax 3 BF Questions (Help)

Post by Grakrob778 » Thu Mar 26, 2020 2:55 am

Thank you for your help!

mdwmark
Ohhhhhh My!
Ohhhhhh My!
Posts: 132
Joined: Tue Mar 04, 2014 6:13 pm

Re: SolarMax 3 BF Questions (Help)

Post by mdwmark » Tue Mar 31, 2020 6:10 am

The 6Ang filter is just a bandpass. So it will have the bandpass at Ha but will turn back on at about 500nm and 780nm. The bandpass will look the same even when it fails. If you are looking at the color. The most common is the wavelength will shift either long or short over time. This will make the image look dimmer. Another way is to look through them at a fluorescent lamp. Then tilt the filter, it should look clear at the different angles. When you tilt the filter you will see the next order of bandpasses as they appear in the unblocked blue side of the bandpass. The simple way is, of course using a spectrometer.
Mark W

User avatar
Solar-Cologne
Ohhhhhh My!
Ohhhhhh My!
Posts: 97
Joined: Tue Nov 10, 2015 8:57 am
Location: Cologne-Public-Observatory / Germany

Re: SolarMax 3 BF Questions (Help)

Post by Solar-Cologne » Tue Mar 31, 2020 6:18 am

Yesterday I spoke with Wolfgang Lille about the Coronado BF blockingfilters
.
Only the PST 5mm block filter is a pure block filter !!!

From the BF15, BF 18 and BF30 all are glued with a prefilter ala a BG38 !!!
Dreadful......horrible

sunny Greetings
Achim

Sorry, I made a mistake.

Only the Coronado PST BF 5mm is glued with a red glass filter .

From the BF 15 upwards they are additional glued with an other prefilter like a BG38.

Visually terrible compared to the BF 5, I tested it myself at the German H-Alpha Meeting in Rüsselsheim.


H-Alpha Meeting Rüsselsheim 2011.jpg
H-Alpha Meeting Rüsselsheim 2011.jpg (1.13 MiB) Viewed 109 times
Here you see my sun construction in Rüsselsheim.
SW 6 "f8 FH refractor with 135mm front C-ERF, PST 5mm BF with internal ITF filter.
Dietmar Sellner, the organizer of the meeting, came with his selected Coronado BF 15 and put it on my system.
Oh yeah ... cruel no comparison to BF 5 from PST.
Useless !!!

Seen correctly ..... laugh, the ERF is fixed with parcel tape. :D



https://www.ruesselsheimer-sternfreunde ... pha-treff/

User avatar
DeepSolar64
Almost There...
Almost There...
Posts: 543
Joined: Thu Sep 05, 2019 12:19 am
Location: Edneyville North Carolina U.S.A.

Re: SolarMax 3 BF Questions (Help)

Post by DeepSolar64 » Wed Apr 01, 2020 5:08 am

Does Meade Coronado even make a BF5 outside of the PST?

Hey, I have taped white light filters to my scopes before. It works!
Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado AZS Alt/Az Mount
Lunt, Coronado, TeleVue, Orion and Celestron Eyepieces

User avatar
Solar-Cologne
Ohhhhhh My!
Ohhhhhh My!
Posts: 97
Joined: Tue Nov 10, 2015 8:57 am
Location: Cologne-Public-Observatory / Germany

Re: SolarMax 3 BF Questions (Help)

Post by Solar-Cologne » Wed Apr 01, 2020 5:15 am

James,

I think and i know, that the BF 5 only used in a PST, W. Lille said the same.

White Light Filter before a H-Alpha Scope ?

sunny Greetings
Achim

User avatar
DeepSolar64
Almost There...
Almost There...
Posts: 543
Joined: Thu Sep 05, 2019 12:19 am
Location: Edneyville North Carolina U.S.A.

Re: SolarMax 3 BF Questions (Help)

Post by DeepSolar64 » Wed Apr 01, 2020 5:20 am

No, lol. White light filter on a regular refractor.
Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado AZS Alt/Az Mount
Lunt, Coronado, TeleVue, Orion and Celestron Eyepieces

Post Reply