Search found 306 matches

by bart1805
Mon Nov 19, 2018 11:02 pm
Forum: This is SolarChat !!
Topic: Old Coronado BF30
Replies: 23
Views: 455

Re: Old Coronado BF30

Hi Bart, No doubt a killer deal, as the filter itself is probably worth 10 times the price advertised. I have 3 BF 30's and they all have different brightness levels. Sometimes darker is better... Your proposed ancillary filters should work well, as the DERF will block UV and near IR, the 35 nm H a...
by bart1805
Sun Nov 18, 2018 4:32 pm
Forum: Solar Scope Modifications
Topic: Dismantling and modification of a PST CaK
Replies: 33
Views: 1354

Re: Dismantling and modification of a PST CaK

You can totally eliminate that baader planetarium K-filter (i would resell it), put the pst filter in the tilter instead so you can take blue wing images with a couple twists.. Could experiment this morning for about half an hour. The altitude of the sun was 15 degrees. And I really needed the Baad...
by bart1805
Fri Nov 16, 2018 5:43 pm
Forum: This is SolarChat !!
Topic: Old Coronado BF30
Replies: 23
Views: 455

Re: Old Coronado BF30

pedro wrote:
Thu Nov 15, 2018 9:22 pm
I know the guy that sold the filter, he lives in Portugal. I was also interested but I saw the advert a little too late.
I was lucky this time! And also bought the original collimation lenses of the ASM-40. No real use for it at the moment, but nice to experiment with.
by bart1805
Fri Nov 16, 2018 10:14 am
Forum: Solar Scope Modifications
Topic: Dismantling and modification of a PST CaK
Replies: 33
Views: 1354

Re: Dismantling and modification of a PST CaK

Received the second PST CaK today. Lower number: 50095. And I could screw the gold tube by hand of the blue ring. No force needed at all. Filter cell also unscrewed by hand, no force needed. Less glue was used to attach the filter to the retaining ring. So in about 3 minutes I had a second PST CaK #...
by bart1805
Thu Nov 15, 2018 9:02 pm
Forum: This is SolarChat !!
Topic: Old Coronado BF30
Replies: 23
Views: 455

Re: Old Coronado BF30

Hi Bob,
Oliver suggested the same. But I just bought the UV/IR on KG3 (for the CaK filter) and will now also try it with the BF30. Single stacked the exposure times in H-alpha with the ASI290mm were so short I had to use a ND0.6 filter. So a bit darker is no problem at all.
CS! Bart.
by bart1805
Thu Nov 15, 2018 7:52 pm
Forum: This is SolarChat !!
Topic: Old Coronado BF30
Replies: 23
Views: 455

Re: Old Coronado BF30

Thanks Bob! The filter I got was exactly as described in the advert. So I already knew that it was dimmer than a regular BF30. I bought it, and am really happy with it. Very interesting to see with my own eyes how it looks exactly and to be able to try it out myself. And the price was really reasona...
by bart1805
Tue Nov 13, 2018 9:02 pm
Forum: This is SolarChat !!
Topic: Old Coronado BF30
Replies: 23
Views: 455

Re: Old Coronado BF30

And some more information OPT website): There are many important considerations if you are putting together a system made from older parts or those of unknown origin: Coronado Instruments would like to caution people that you cannot swap Coronado blocking filters and narrowband front elements ad hoc...
by bart1805
Tue Nov 13, 2018 8:53 pm
Forum: This is SolarChat !!
Topic: Sun November 11th
Replies: 17
Views: 289

Re: Sun November 11th

Beautiful pictures Franco! And a nice set-up!
by bart1805
Tue Nov 13, 2018 8:28 pm
Forum: This is SolarChat !!
Topic: Old Coronado BF30
Replies: 23
Views: 455

Re: Old Coronado BF30

It isn't tiltable, but the etalon is. But wasn't Coronado Solarscope in those days? Alexandra I am not sure if it started as Solarscope or as Coronado. As far as I know, the first Coronado Etalons were made in the Isle of Man. Ken Hugget continued in the Isle of Man with Solarscope UK. Lunt took Co...
by bart1805
Tue Nov 13, 2018 10:21 am
Forum: This is SolarChat !!
Topic: Old Coronado BF30
Replies: 23
Views: 455

Re: Old Coronado BF30

Thanks Alexandra! And are you able to tilt the blocking filter or can the solarscope etalon be tilted?
by bart1805
Tue Nov 13, 2018 5:47 am
Forum: This is SolarChat !!
Topic: Old Coronado BF30
Replies: 23
Views: 455

Re: Old Coronado BF30

Bart, Is it supposed to be a full BF30 filter assembly? An ITF plus a final blocking/ sort filter??? Hi Merlin, Yes it is. In fact it is a kind of Skybender with an ITF and some kind of blocking filter. It is complete apart from the 2 inch nosepiece, but that can be easily replaced. If you turn the...
by bart1805
Mon Nov 12, 2018 7:52 pm
Forum: This is SolarChat !!
Topic: Old Coronado BF30
Replies: 23
Views: 455

Re: Old Coronado BF30

Could be Apollo will try it out. In my normal set up I use already a Baader D-Erf and a Baader 35nm H-alpha filter. So let's hope there is some sun this weekend and find out how the image on the screen looks like.
CS! Bart.
by bart1805
Mon Nov 12, 2018 1:52 pm
Forum: This is SolarChat !!
Topic: Old Coronado BF30
Replies: 23
Views: 455

Old Coronado BF30

Hi all, I just bought an old BF30, made in 2000 or 2001. The BF can be tilted, shows no corrosion of the ITF. But what a difference compared to modern blocking filters. It let's through far more light, look at the image. So that will be the problem I guess: more light of a bandwidth you don't want t...
by bart1805
Tue Nov 06, 2018 8:53 pm
Forum: Solar Scope Modifications
Topic: Dismantling and modification of a PST CaK
Replies: 33
Views: 1354

Re: Dismantling and modification of a PST CaK

Thanks Mark, I really like the 290.
by bart1805
Sun Nov 04, 2018 10:47 pm
Forum: Solar Scope Modifications
Topic: Dismantling and modification of a PST CaK
Replies: 33
Views: 1354

Re: Dismantling and modification of a PST CaK

A lot of high clouds today and the sun is quite low here in the Netherlands. But at least I could give it a try. Used a Bresser Messier 127mm f/1200 mm stopped down to 10 cm. Set up used was Baader Blue / Single Baader CaK / PST CaK #1 / Baader Blue / LuntB600. With just the PST #1 filter (so no Lun...
by bart1805
Sat Nov 03, 2018 8:27 pm
Forum: Solar Scope Modifications
Topic: Dismantling and modification of a PST CaK
Replies: 33
Views: 1354

Re: Dismantling and modification of a PST CaK

TheSkyBurner wrote:
Sat Nov 03, 2018 7:27 pm
You can totally eliminate that baader planetarium K-filter (i would resell it), put the pst filter in the tilter instead so you can take blue wing images with a couple twists..
Maybe I will Apollo, but not before trying out all the different combinations I can come up with.
by bart1805
Sat Nov 03, 2018 4:19 pm
Forum: Solar Scope Modifications
Topic: Dismantling and modification of a PST CaK
Replies: 33
Views: 1354

Re: Dismantling and modification of a PST CaK

marktownley wrote:
Sat Nov 03, 2018 3:46 pm
Nice creations Bart!
Thanks Mark. Tomorrow, if the weather permits, will test it with the Bresser 127mm f/10.
by bart1805
Sat Nov 03, 2018 3:42 pm
Forum: Solar Scope Modifications
Topic: Dismantling and modification of a PST CaK
Replies: 33
Views: 1354

Re: Dismantling and modification of a PST CaK

The second PST CaK will be here in about two weeks I think. Thanks to Apollo and Marty I found the right filter cell for the 25mm PST #1 filter. Here is how it looks now: https://farm5.staticflickr.com/4818/45647707992_8a15b2e19c.jpg CaKfilter_annotated by bart moors , on Flickr The Lunt B600 can be...
by bart1805
Thu Oct 25, 2018 7:36 pm
Forum: Solar Scope Modifications
Topic: Dismantling and modification of a PST CaK
Replies: 33
Views: 1354

Re: Dismantling and modification of a PST CaK

TheSkyBurner wrote:
Thu Oct 25, 2018 6:18 am
so i figured out the best way to remove a locked pst tube.

You need to find a pipe vice.
Yep, that looks good. But with the ruler method it is not really necessary to remove the tube. But would be handy for a regular PST. Thanks!
by bart1805
Thu Oct 25, 2018 7:32 pm
Forum: This is SolarChat !!
Topic: Astronomy Photographer of the Year 2018
Replies: 12
Views: 406

Re: Astronomy Photographer of the Year 2018

What a beautiful picture Stu, congratulations!
by bart1805
Thu Oct 25, 2018 7:31 pm
Forum: This is SolarChat !!
Topic: new camera advice
Replies: 5
Views: 243

Re: new camera advice

I agree. The IMX174 has proven itself for solar imaging.
by bart1805
Thu Oct 25, 2018 7:30 pm
Forum: This is SolarChat !!
Topic: Point grey imx 174 help help please
Replies: 13
Views: 280

Re: Point grey imx 174 help help please

I can't see the difference with or without the external powercable to the IMX174.
by bart1805
Sun Oct 21, 2018 10:15 am
Forum: Solar Scope Modifications
Topic: Dismantling and modification of a PST CaK
Replies: 33
Views: 1354

Re: Dismantling and modification of a PST CaK

Even after applying some heat on the blue collar of the PST CaK I could not remove it from the black box. So removed the lens and put it in a gold tube of a H-alpha PST. The difference in coatings is clearly visible. On the left the CaK objective. https://farm2.staticflickr.com/1918/45415332842_6992...
by bart1805
Fri Oct 19, 2018 5:31 pm
Forum: This is SolarChat !!
Topic: ZWO ASI290MM is too slow in the FireCapture V2.6.08
Replies: 9
Views: 305

Re: ZWO ASI290MM is too slow in the FireCapture V2.6.08

Yep, that’s the way to choose highspeed in FC.
by bart1805
Fri Oct 19, 2018 2:37 pm
Forum: This is SolarChat !!
Topic: ZWO ASI290MM is too slow in the FireCapture V2.6.08
Replies: 9
Views: 305

Re: ZWO ASI290MM is too slow in the FireCapture V2.6.08

Hi Valery, you could try to switch on "High speed mode" in the camera settings.