Search found 58 matches
- Sat Oct 15, 2022 7:15 pm
- Forum: Solar Astronomy Shop and Swap
- Topic: Solar Ha Scope for sale U.K.
- Replies: 1
- Views: 1255
Re: Solar Ha Scope for sale U.K.
I am afraid this has now been separated, and the OTA is available as a normal refractor! Having had little use. Will make an ideal PST donor scope for £45 ! Collected Post Code area GU105DT U.K.
- Tue Sep 27, 2022 4:32 pm
- Forum: Solar Astronomy Shop and Swap
- Topic: Andover Ha Filter
- Replies: 7
- Views: 2852
Re: Andover Ha Filter
This is now SOLD . Sungazer.
- Tue Sep 27, 2022 8:42 am
- Forum: Solar Astronomy Shop and Swap
- Topic: Solar Ha Scope for sale U.K.
- Replies: 1
- Views: 1255
Solar Ha Scope for sale U.K.
I have a Skywatcher 90 mm F 10 Refractor ,which has had little use, mounted on matching tripod and has a rechargeable battery drive unit ,with RDF .One tripod leg has had a repair to the clamp. PLUS an Ha conversion kit for use with a PST. To use remove focuser ( 3 screws) and insert the ERF and ada...
- Sat Sep 03, 2022 3:17 pm
- Forum: Solar Scope Modifications
- Topic: Zeiss Telementor used as an Ha Scope.
- Replies: 2
- Views: 1305
Zeiss Telementor used as an Ha Scope.
Hello All, This may already have been discussed, but I wondered if anyone had used a Telementor with an ERF ahead of the lens, and either a PST Etalon or a Quark for Solar use or not ?. I do have a pair of lens to use in my PST Etalon, which reduces the Fl to 98 mm, instead of the z200mm standard. C...
- Mon May 03, 2021 4:54 pm
- Forum: Solar Astronomy Shop and Swap
- Topic: Andover Ha Filter
- Replies: 7
- Views: 2852
Andover Ha Filter
For Sale , Andover Corp Optical Filter. No 656FSO3-12.5. MM. AM 94410. Ser No 08. This was purchased for a project Solar scope. But was not ever used. This comes with a light transmission sheet showing exact cut off, for the actual filter. Photos of filter and transmission sheet ,upon request .. I a...
- Mon Apr 13, 2020 9:57 am
- Forum: This is SolarChat !!
- Topic: Forum upgrades finally completed. sort of
- Replies: 17
- Views: 4374
Re: Forum upgrades finally completed. sort of
Thank you for the upgrades etc,
I use this information daily to keep up with all the Solar events. , Keep well with all the world problems around u# all. John.
I use this information daily to keep up with all the Solar events. , Keep well with all the world problems around u# all. John.
- Fri Nov 01, 2019 9:14 am
- Forum: This is SolarChat !!
- Topic: Which etalon is better? Please, look, think and vote.
- Replies: 12
- Views: 2475
Re: Which etalon is better? Please, look, think and vote.
Hi Valery, After looking carefully,in my opinion the first one is more appealing,and has very slightly better definition. Though there is not a lot to of difference, probably a personal choice. I just wish my scope would be that good !!!! John.
- Sat Oct 19, 2019 9:04 am
- Forum: Solar Radio, Magnetometry and Spectroscopy
- Topic: anyone know about this guy
- Replies: 6
- Views: 2888
Re: anyone know about this guy
Hello All, I had the privilege of using the Spectrhelioscope when Mr Hatfield was still with us, it was one of the things that made me take up Solar viewing! This was a very clever construction from many bits left over from the war etc.and eventually led to me having an 4” F 22 ERF LENS made by the ...
- Sun Nov 12, 2017 9:02 am
- Forum: Solar Astronomy Shop and Swap
- Topic: Lumicon Ha filter .
- Replies: 2
- Views: 3799
Re: Lumicon Ha filter .
Will do,Many thanks,John.
- Sat Nov 11, 2017 9:13 am
- Forum: Solar Astronomy Shop and Swap
- Topic: Lumicon Ha filter .
- Replies: 2
- Views: 3799
Lumicon Ha filter .
Hi I have been given an old Lumicon Ha filer with ERF for a SCT ,BUT no instruction book/sheet. Has anyone got one of the filters with info sheet,and could Email me a copy, I would be most grateful ,John.
- Thu Oct 26, 2017 5:40 pm
- Forum: This is SolarChat !!
- Topic: Total Solar Eclipse 2017 my final version
- Replies: 13
- Views: 2805
Re: Total Solar Eclipse 2017 my final version
Fantastic final image,wish I could have been able to get to U.S.A. for the eclipse.j.L.
- Thu May 11, 2017 8:38 am
- Forum: This is SolarChat !!
- Topic: Can you guess???
- Replies: 22
- Views: 3267
Re: Can you guess???
A very interesting project,with many problems yet to resolve. I will be very interested when it is UP and recording.All the best.
- Tue May 09, 2017 8:13 am
- Forum: This is SolarChat !!
- Topic: The "Sunbeam 14"
- Replies: 21
- Views: 3615
Re: The "Sunbeam 14"
Most impressive,I am sure this will be much used,wonderful definition.All the best for the future,J L.
- Wed Oct 05, 2016 9:10 am
- Forum: Solar Scope Modifications
- Topic: SolarMax internal etalon size (old SM70 and SM90II)
- Replies: 14
- Views: 7833
Re: SolarMax internal etalon size (old SM70 and SM90II)
Many thanks Bob for the very informative photos of Etalon production. I had often wondered how they where manufactured. Quite a change from,The old system of half plates and Polaroid sheets interleaved ,which was used in the 1960s. D
- Wed Jul 27, 2016 9:07 am
- Forum: This is SolarChat !!
- Topic: USER POLL CONCERNING NEW HOST.....PLEASE RESPOND!!!
- Replies: 23
- Views: 4038
Re: USER POLL CONCERNING NEW HOST.....PLEASE RESPOND!!!
Hi, I am very happy with the new system,and do not need any more image space. Very many thanks for all your efforts,in setting up the new server,kind regards,John.
- Fri Jul 08, 2016 7:36 am
- Forum: This is SolarChat !!
- Topic: An Unexpected Transit
- Replies: 13
- Views: 1655
Re: An Unexpected Transit
Must have been close encounters for those on board !!!!! A very nice video,kind regards,John.
- Fri Jun 24, 2016 5:47 pm
- Forum: This is SolarChat !!
- Topic: Today's very quiet SUN (20160624)
- Replies: 5
- Views: 1009
Re: Today's very quite SUN (20160624)
Very nice for a spotless day,John.
- Mon May 09, 2016 2:54 pm
- Forum: This is SolarChat !!
- Topic: Transit of Mercury, Ha
- Replies: 7
- Views: 1541
Re: Transit of Mercury, Ha
VERY good timing,just seen the mid transit in white light.John.
- Sat Apr 30, 2016 7:27 pm
- Forum: This is SolarChat !!
- Topic: Fibrils Flower on the Sun. 280mm aperture. NEW IMAGE added!
- Replies: 23
- Views: 2544
Re: Fibrils Flower on the Sun. 280mm aperture represents.
Unbelievable definition, very well done. Kind regards,John.
- Mon Apr 11, 2016 5:43 pm
- Forum: Solar Astronomy Shop and Swap
- Topic: P.S.T Tube.
- Replies: 3
- Views: 3921
Re: P.S.T Tube.
Many thanks Mark, I have found one locally. This solves my problem.John.
- Sun Apr 10, 2016 2:27 pm
- Forum: Solar Astronomy Shop and Swap
- Topic: P.S.T Tube.
- Replies: 3
- Views: 3921
P.S.T Tube.
Seeking a PST gold tube,in any condition needed for a mod alteration. Fair price paid. Please Email if you have one available ,thank you ,John.
- Mon Mar 14, 2016 9:02 am
- Forum: Solar Scope Modifications
- Topic: Took one for the team. (pressure tuner guts)
- Replies: 5
- Views: 4046
Re: Took one for the team. (pressure tuner guts)
Very interesting and useful information .Thanks for posting the pictures .i am glad it all went back correctly . John.
- Fri Oct 16, 2015 12:17 pm
- Forum: Solar Scope Modifications
- Topic: Rusty BF5
- Replies: 7
- Views: 3738
Re: Rusty BF5
Hi Brian, The two holes,which you should unscrew ,using a pair of strong dividers,the locking glue is very tight to undo. When you remove the old filter try and make sure you put the new one the same way up. John.
- Sat Oct 03, 2015 10:41 am
- Forum: Solar Scope Modifications
- Topic: Rusty BF5
- Replies: 7
- Views: 3738
Re: Rusty BF5
Hi Brian ,The tube that screws into the body has to be removed, VERY tight usually, but a boa strap may help. When removed you will find a glued ring with 2 holes which has to be removed,use a pin punch with care, then remove old ITF and replace with the new one.
Hope this help, John.
Hope this help, John.
- Sat Oct 03, 2015 7:44 am
- Forum: Solar Scope Modifications
- Topic: Rusty BF5
- Replies: 7
- Views: 3738
Re: Rusty BF5
Hello Brian, You can obtain a new ITF filter, which is a straight swop, from Maier Photonics inc, in the USA, mine cost about £55 delivered. Might be slightly different because of exchange rates. This will transform your scope to as good as new.
Hope this might help,
John.
Hope this might help,
John.
- Tue Sep 29, 2015 7:41 am
- Forum: This is SolarChat !!
- Topic: AR2422 good seeing ! 204 mm refractor WL
- Replies: 15
- Views: 1519
Re: AR2422 good seeing ! 204 mm refractor WL
First class results, congratulations, John.
- Wed Sep 16, 2015 1:44 pm
- Forum: Solar Scope Modifications
- Topic: Best donor scope for pst mod?
- Replies: 8
- Views: 4963
Re: Best donor scope for pst mod?
Hi Fenrir, I have had this problem but was able to find a -98mm lens, which can be made to fit into the front of a PST etalon. These were, and most likely , still are available from Surplus Shed, in the U.S.A. at a very modest cost. Also -129 mm ,which seem to have less distortion than the -98 mm . ...
- Wed Aug 26, 2015 11:13 am
- Forum: This is SolarChat !!
- Topic: Today's SUN (20150825) with EXCEPTIONAL SEEING
- Replies: 9
- Views: 1009
Re: Today's SUN (20150825) with EXCEPTIONAL SEEING
Fantastic results,very well done Pedro.
- Fri Jul 31, 2015 8:35 am
- Forum: This is SolarChat !!
- Topic: Only Stardust In The Wind - Farewell My Friend...
- Replies: 98
- Views: 11179
Re: Only Stardust In The Wind - Farewell My Friend...
So sorry to hear the unexpected news,a great loss to his family,and all the Solar community. R.I.P.
- Mon May 25, 2015 9:19 am
- Forum: This is SolarChat !!
- Topic: New Herschell Newton D250 - Instrumental turbulence
- Replies: 10
- Views: 1935
Re: New Herschell Newton D250 - Instrumental turbulence
Hi, A very clever design, and the cell should avoid uneven heating of the mirror, if not used for a long period at a time. Good luck for the future. John.
- Mon Mar 09, 2015 8:39 am
- Forum: Commercial Solar Filters/Cameras/Hardware
- Topic: New PST ITF?
- Replies: 33
- Views: 13721
Re: New PST ITF?
Hi Jarrod, The ITF only took about 6 days to come via airmail,to England. As to customs they did not bother. I think you are allowed to bring in items for personal use up to £50 Maier Photonics are very nice people to deal with. All the best with your purchase, and fitting,make sure the silvery side...
- Sun Mar 08, 2015 11:36 am
- Forum: Commercial Solar Filters/Cameras/Hardware
- Topic: New PST ITF?
- Replies: 33
- Views: 13721
Re: New PST ITF?
Hi All, I can assure you that the Maier ITF filter is a direct replacement for the PST original, and in my opinion improves the image from the old one. I replaced mine last year. You can order direct from Maier Photonics and pay using Paypal. The cost is about £57 delivered,just depends on the excha...
- Sun Feb 15, 2015 10:02 am
- Forum: This is SolarChat !!
- Topic: 14th Feb, PST mod with a new collimating lens
- Replies: 13
- Views: 1276
Re: 14th Feb, PST mod with a new collimating lens
Very nice images,looking forward to reading about your PST mod! As I have just finished a 68mm F 8 Mod with a 60 mm sub aperture, coated ERF . Giving a full sun view. Just need more Sun to fully test !!!
- Fri Jan 09, 2015 9:06 am
- Forum: This is SolarChat !!
- Topic: The Sun's Midriff - 9th Jan
- Replies: 14
- Views: 854
Re: The Sun's Midriff - 9th Jan
Very nice image George. Kind regards, John.
- Thu Dec 25, 2014 9:12 am
- Forum: This is SolarChat !!
- Topic: My Lunt 50 arrived (at last)
- Replies: 14
- Views: 2688
Re: My Lunt 50 arrived (at last)
Hi Gordon, Very pleased you finally have the lunt 50, and your first results. I have one on order for later in the new year. Happy Xmas to all, John.
- Sun Nov 16, 2014 9:20 am
- Forum: This is SolarChat !!
- Topic: November 16th H-alpha disk
- Replies: 11
- Views: 1130
Re: November 16th H-alpha disk
Hi Peter, First class images, I wish I could emulate that quality. !!
John.
John.
- Fri Oct 24, 2014 7:57 am
- Forum: This is SolarChat !!
- Topic: Partial Solar Eclipse From Southern California
- Replies: 6
- Views: 1066
Re: Partial Solar Eclipse From Southern California
Hi Dave, Staggeringly good picture, thanks for posting it. John.
- Mon Oct 20, 2014 8:14 am
- Forum: This is SolarChat !!
- Topic: Sundays Selection 19th October
- Replies: 24
- Views: 1729
Re: Sundays Selection 19th October
Hi Mark, A very nice series, wish I could produce anything like them, John.
- Sat Sep 27, 2014 8:13 am
- Forum: This is SolarChat !!
- Topic: FANTASTIC SUN (20140926) - lots of activity
- Replies: 21
- Views: 1246
Re: FANTASTIC SUN (20140926) - lots of activity
A wonderful set of images Pedro. I hope you enjoyed your UK visit. Kind regards, John.
- Tue Aug 12, 2014 7:58 am
- Forum: This is SolarChat !!
- Topic: Sub-ångström debut with Lunt 35
- Replies: 25
- Views: 3621
Re: Sub-ångström debut with Lunt 35
First class pictures for a 35mm scope, very well done, keep on imaging. John.
- Tue Jul 22, 2014 7:57 pm
- Forum: This is SolarChat !!
- Topic: Ha images 22nd July
- Replies: 15
- Views: 1080
Re: Ha images 22nd July
Hi Stu, very nice images, not such a quiet Sun !! John.
- Sun Jul 20, 2014 8:11 am
- Forum: This is SolarChat !!
- Topic: Sun After The Storms - Saturday 19th July
- Replies: 12
- Views: 469
Re: Sun After The Storms - Saturday 19th July
Hi Mark, First class results, the seeing always gets better after rain.
- Thu Jun 26, 2014 7:46 am
- Forum: This is SolarChat !!
- Topic: Full disk, 6/25/14
- Replies: 11
- Views: 1025
Re: Full disk, 6/25/14
WELL DONE, first class images. A small plywood disc, with a slightly smaller aperture may help. Kind regards, John.
- Wed Jun 18, 2014 7:44 pm
- Forum: Commercial Solar Filters/Cameras/Hardware
- Topic: First H-Alpha Solar Telescope - Question
- Replies: 13
- Views: 4874
Re: First H-Alpha Solar Telescope - Question
Hi Lukas, Without doubt the PST is a very good scope ,and can later on be used as a very nice mod. I have used mine for many years, with excellent views. .All the best, John.
- Wed Jun 11, 2014 7:03 pm
- Forum: Solar Astronomy Shop and Swap
- Topic: HA. Filter.
- Replies: 4
- Views: 2980
Re: HA. Filter.Etc.
Hi Valery,Sorry I do NOT have the PST optics for sale ,only the ERF and Lunt blocking filter. Kind regards ,John.
- Wed Jun 11, 2014 6:18 pm
- Forum: Solar Astronomy Shop and Swap
- Topic: HA. Filter.
- Replies: 4
- Views: 2980
Re: HA. Filter.Etc.
Hi Valery,The scope was converted to take a PST body without the front lens and the ERF used down the tube to give a F 10 focal length. Hope this helps,John.
- Wed Jun 11, 2014 8:29 am
- Forum: Solar Astronomy Shop and Swap
- Topic: HA. Filter.
- Replies: 4
- Views: 2980
HA. Filter.
Hi, I have purchased at the IAS show a new scope, and have decided to sell the following solar items. 1. Schott 63mm x 5mm ERF with IR coating, and certificate . £85 . To include a wooden home made cell to fit inside a 90mm tube if needed. Ideal for a PST mod. NOW SOLD, Many thanks ,M.F.W.
- Thu Jun 05, 2014 8:00 am
- Forum: This is SolarChat !!
- Topic: Prominence on june 3rd and rpw's on AR2077
- Replies: 21
- Views: 1148
Re: Prominence on june 3rd and rpw's on AR2077
Very good results, all the best. John.
- Thu May 22, 2014 8:24 am
- Forum: This is SolarChat !!
- Topic: Big Bear Solar Observatory
- Replies: 16
- Views: 1194
Re: Big Bear Solar Observatory
Hi, Should be a very interesting visit, as the scope has been rebuilt after the earthquake damage some years ago. VERY JEALOUS !!! John.
- Tue May 13, 2014 8:17 am
- Forum: Solar Scope Modifications
- Topic: Lunt ERF question.
- Replies: 8
- Views: 2239
Re: Lunt ERF question.
Hi, in my opinion the slightly purple side should face the sun, this should be the IR coating. My ERF has a similar colour and has always been that way round as advised by Schotts when purchased. Hope this helps, John.