Search found 151 matches

by PEterW
Mon May 29, 2023 5:09 pm
Forum: This is SolarChat !!
Topic: 21st May 2023 Altair G-band filter test
Replies: 43
Views: 2406

Re: 21st May 2023 Altair G-band filter test

Be interested in a visual comparison on a medium sized scope between continuum, “improved” continuum and this new g-band filter. Time to dust off the old kit and see what new things have come along!

Peter
by PEterW
Mon May 24, 2021 8:15 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: SOLEX spectrohelograph project - 3D printing DIY
Replies: 21
Views: 3112

Re: SOLEX spectrohelograph project - 3D printing DIY

You’ve added some after market parts to that build?! (Focusser, spectrum indicator…) details please? Also can you give some example links to the metal thread adapters and any other non widely available bits I need.
Thanks
Peter
by PEterW
Mon May 24, 2021 8:11 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Mercury sodium tail
Replies: 16
Views: 1457

Re: Mercury sodium tail

The guess was that this is too faint for eyeball onserving? The original image came from a 66mm refractor, one does wonder what some aperture and maybe additional filtering could do?
Peter
by PEterW
Sat May 22, 2021 12:08 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: SOLEX spectrohelograph project - 3D printing DIY
Replies: 21
Views: 3112

Re: SOLEX spectrohelograph project - 3D printing DIY

Cool image! Just got the import tax bill for mine. Parts printed off a while back. Now I’ve got to find the screws and thread thingies. Looks like I might want to treat myself to a more modern camera too (dmk41 is rather aged).

Peter
by PEterW
Sat Oct 17, 2020 6:42 pm
Forum: Sunlit Earth
Topic: Night time beasties....
Replies: 3
Views: 805

Re: Night time beasties....

This is thermal as in 10micron wavelength heat radiation, not 1.5micron near infrared. Camera resolutions are much lower as the pixels are much more complex to detect the tiny temperature differences: I’ve sat on the fence waiting for “good enough” to become “cheap enough”. The time has come and I’m...
by PEterW
Sat Oct 17, 2020 10:09 am
Forum: Sunlit Earth
Topic: Night time beasties....
Replies: 3
Views: 805

Night time beasties....

D5825D27-C7F5-485A-9A68-2A73444D00D8.jpeg Probably the crappiest image on this forum, but also the most convoluted solar radiation image? I spent some time watching little owls hunting worms on a local cricket pitch using a thermal scope, would never have known they were there otherwise. Very good ...
by PEterW
Sat Mar 26, 2016 5:55 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: A big solar scope is coming.....
Replies: 16
Views: 5393

Re: A big solar scope is coming.....

Wonder what it'll do in white light?
So you have a Mercury transit event planned for Greenwich..,interesting.

PeterW
by PEterW
Sun Jul 05, 2015 7:40 pm
Forum: Solar Scope Modifications
Topic: Greating!
Replies: 3
Views: 2121

Re: Greating!

Look with your eyes.. it is a "replica grating" and if you touched it the magic would wipe off... don't look over it or talk over it either!

PEterW
by PEterW
Sun Jul 05, 2015 7:16 pm
Forum: Solar Scope Modifications
Topic: Greating!
Replies: 3
Views: 2121

Greating!

Remembered I had this in the cupboard. Nice big 1200lpm grating. Now how do we make SHG's....

Thanks

PEterW
by PEterW
Sun Jul 05, 2015 6:50 pm
Forum: Solar Scope Modifications
Topic: SolarMaxII 150mm Mod
Replies: 14
Views: 5174

Re: SolarMaxII 150mm Mod

Amazing detail!

PEterW
by PEterW
Sun Jul 05, 2015 3:55 pm
Forum: Solar Scope Modifications
Topic: DIY Solar Scintillation Seeing Monitor with FC support
Replies: 127
Views: 70314

Re: DIY Solar Scintillation Seeing Monitor with FC support

Just found this one by random surfing.... I have an arduino so will look to make my own one. Maybe add a display rather than just uploading to the serial output.

Cheers

PEter
by PEterW
Fri Mar 27, 2015 7:40 pm
Forum: Solar Scope Modifications
Topic: Big C11 options....
Replies: 31
Views: 8530

Big C11 options....

Right, I know a guy with an 11” SCT who is bored of imaging the planets…. Didn't think he could observe the sun with it. I mentioned Baader foil and then we got thinking. So for white light some ND3 imaging baader foil over the front and a narrow filter… continuum of maybe a NIR filter to help impro...
by PEterW
Thu Dec 25, 2014 3:27 pm
Forum: This is SolarChat !!
Topic: Seasons Greetings!
Replies: 4
Views: 804

Seasons Greetings!

Lovely sunny day, everyone out, leaving me to "make xmas lunch" (and get the most solar data I have in session for a long while). All grabbed with my usual kit, processed (over lunch) and arranged in colour (so you don't have to scroll through a load of different images!) Let's hope for a ...
by PEterW
Sat Dec 20, 2014 1:41 pm
Forum: This is SolarChat !!
Topic: Short day... short session
Replies: 9
Views: 876

Short day... short session

OK, on holiday now... sun shining through the window, hasn't gone behind the trees yet. Forced myself out to have a midwinter imaging run. Boiling seeing, breezy.. so only CaK. Ran it through Autostakert alpha.... lovely and fast. Some nice little bright active bits in that nicely active spot region...
by PEterW
Mon May 19, 2014 7:02 pm
Forum: This is SolarChat !!
Topic: 18th May - Nice day
Replies: 5
Views: 669

Re: 18th May - Nice day

Might have to buy some (ugh) solar filter material.... Focussing at f4 won't be much fun!

Cheers

Peter
by PEterW
Sun May 18, 2014 9:10 pm
Forum: This is SolarChat !!
Topic: Solarscope Saturday
Replies: 26
Views: 2156

Re: Solarscope Saturday

Awesome... You and Ken seem to have nailed it down good and proper....

Peter
by PEterW
Sun May 18, 2014 5:24 pm
Forum: This is SolarChat !!
Topic: 18th May - Nice day
Replies: 5
Views: 669

18th May - Nice day

Had a bit of time to hand so dragged the EQ6 out, had to move the image about to smear out those little dusty doughnuts! Mix of 2x and 3x with the 80mm and CaK. Also did some 3x Wedge white light too 80mm. Then onto some experimental stuff.. what can we fit to the back of the 8" f4 reflector......
by PEterW
Wed Apr 16, 2014 7:02 am
Forum: This is SolarChat !!
Topic: Threesome from 15th April
Replies: 5
Views: 682

Threesome from 15th April

The kids are at the Grandparents, the clouds have parted (finally).... time for some more imaging!! Only prime focus as I didnt have time to get the EQ6 out... have to wait till next time. Lots of activity on the diswk... we are spoilt! Cheers PEter PS Looks like I ought to have flipped the CaK imag...
by PEterW
Wed Oct 09, 2013 5:51 pm
Forum: This is SolarChat !!
Topic: Quick higher res CaK at DDA starparty
Replies: 5
Views: 1018

Re: Quick higher res CaK at DDA starparty

Surprised me when I tightened up the autostakkert settings. Hope for my 80mm yet.... I don't plan on buying another scope! Seeing was bad, the original Avi had around 1000frames..... Filled the netbook , put an end to the session!

Cheers

Peter
by PEterW
Tue Oct 08, 2013 11:51 am
Forum: This is SolarChat !!
Topic: Quick higher res CaK at DDA starparty
Replies: 5
Views: 1018

Quick higher res CaK at DDA starparty

Managed to get a quick bit of solar action at a recent starparty on Sunday 6th using a friends 100mm f15 starlight scope. popped my Lunt CaK on it with a 2x barlow. Bad seeing with cirrus and passing clouds, focussing was "fun". Autostakert with only the best 7% of frames take and wavelets...
by PEterW
Fri Jun 07, 2013 10:25 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Lunt CaK module option?
Replies: 8
Views: 1980

Re: Lunt CaK module option?

Why f10? I use a b600 straight through unit in an 80mm f6.8 and the results are none too bad. Forget visual usage, go with a camera. I tried visual with a guy shill had had cataract operations and he couldn't see more than a pink purple fuzz ball that I can at half his age (or so)! Calcium is well w...
by PEterW
Fri Jun 07, 2013 10:20 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Question about Lunt Solar Wedge
Replies: 10
Views: 2518

Re: Question about Lunt Solar Wedge

Only issue i can think of is the extra in focus that the 2" unit needs, once heard of problems with another brand of 2"wedge. I held off till a secondhand intes unit came up, which I snapped up and gives great views. It's only time before you end up getting halpha.... Not always much to se...
by PEterW
Thu Jun 06, 2013 10:33 pm
Forum: Solar Scope Modifications
Topic: Luntanado 60 query
Replies: 8
Views: 1840

Re: Luntanado 60 query

... And finally is there any risk of problems with getting any filter, I know that double stack filters used to have to be selected and setup for the scope they were going to be used on, would hate to get a lemon!

Bedtime.

Peter
by PEterW
Thu Jun 06, 2013 10:21 pm
Forum: Solar Scope Modifications
Topic: Luntanado 60 query
Replies: 8
Views: 1840

Re: Luntanado 60 query

Goodie goodie. OK 2 more for..
Where is the best place to get the filter from
What is the threads that need to be adapted and who is best to make a suitable adapter up for it?

Cheers

pEter
by PEterW
Thu Jun 06, 2013 4:09 pm
Forum: Solar Scope Modifications
Topic: Luntanado 60 query
Replies: 8
Views: 1840

Luntanado 60 query

Id love to double stack my LS60 but its not cheap! I wonder if it is possible to use a 60mm Coronado richview unit on my Lunt... I guess a Thread adapter would be required?? Another question along the same line, would I be able to use the rich view unit on my 80mm wo refractor with the Lunt bf1200 b...
by PEterW
Sun Jun 02, 2013 9:57 pm
Forum: This is SolarChat !!
Topic: Wetland solar observing event report
Replies: 4
Views: 560

Wetland solar observing event report

Noticed the London Wetland Centre was having a Solar Viewing event, organised by the Astro retailer Astronomia, who now have a shop on site. I offered my assistance as I have not heard of any other local events and being a Wetland Centre member it would be free for me to go along. A grey start did n...
by PEterW
Sun Jun 02, 2013 7:12 pm
Forum: This is SolarChat !!
Topic: Point Grey Research cameras in the UK
Replies: 34
Views: 2898

Re: Point Grey Research cameras in the UK

Met a guy at an event over the weekend who liked his Chameleon. I got a trusty DMK41 at the moment, seems like the Chameleon has greater sensitivity but smaller pixels (so less of the disk visible), >8bit (but then lower frame rate), supplied drivers are plop but Firecapture works well?? So a worthw...
by PEterW
Fri May 31, 2013 2:37 pm
Forum: This is SolarChat !!
Topic: Tutorials on Processing?
Replies: 2
Views: 430

Re: Tutorials on Processing?

A can of worms, there seem to be more opinions than solar imagers... Play and see what you prefer. You can easily spend hours fiddling, I never seem to use the same settings twice, just see what works on the data I have.

Of course sometimes a mono image looks best!

Good luck

Peter
by PEterW
Fri May 31, 2013 2:33 pm
Forum: This is SolarChat !!
Topic: Sun in Three lights 25/05/13
Replies: 3
Views: 460

Re: Sun in Three lights 25/05/13

Nice! Always good to contrast what you can see in the 3colours.

Peter
by PEterW
Fri May 31, 2013 2:28 pm
Forum: This is SolarChat !!
Topic: cak full disc
Replies: 11
Views: 770

Re: cak full disc

Nice bit of kit, seems to be delivering the goods! Good luck on keeping the clouds away!

Peter
by PEterW
Fri May 31, 2013 2:26 pm
Forum: This is SolarChat !!
Topic: Some Sun - May 30th
Replies: 11
Views: 752

Re: Some Sun - May 30th

120Gb, that'll take a lot of beer to chug through! Your kit seems to be firing on all cylinders!

Peter
by PEterW
Mon May 27, 2013 9:09 pm
Forum: This is SolarChat !!
Topic: AR11756 Hi Res CaK Closeup
Replies: 30
Views: 2271

Re: AR11756 Hi Res CaK Closeup

This still the "homebrew" filter or are you using something a bit more potent?!

PEter
by PEterW
Mon May 20, 2013 9:15 pm
Forum: This is SolarChat !!
Topic: 2013-05-19 -> The Sun in Ha in High-Res
Replies: 14
Views: 1151

Re: 2013-05-19 -> The Sun in Ha in High-Res

Have to disagree with Alexandra... 3rd/5th AND 6th are amazing. I LIKE a lot. Very good "brushed hair" detail! Did you say which scope combination you used for this lot?

Top notch

PEter
by PEterW
Mon May 20, 2013 8:42 pm
Forum: This is SolarChat !!
Topic: Heads-up London (UK) solar event 1st June
Replies: 8
Views: 459

Heads-up London (UK) solar event 1st June

Just found out that Astronomia are doing a Solar Observing event at the London Wetland Centre (Barnes), Sat 1st June. http://www.wwt.org.uk/visit/london/whats-on/2013/06/01/out-of-this-world/ (reckon I can do a better H-alpha shot too ;-)!) It appears that they now have a showroom there too for Scop...
by PEterW
Mon May 20, 2013 8:38 pm
Forum: This is SolarChat !!
Topic: Published again
Replies: 6
Views: 459

Published again

Any UK members, grab a copy of the June Astronomy Now and see a slightly dark one of my CaK shots at the bottom of the Image Gallery page. I could get used to this!

Cheers

pEter
by PEterW
Mon May 20, 2013 8:36 pm
Forum: This is SolarChat !!
Topic: International Astronomy Show starring the amazing Mark Townley
Replies: 32
Views: 4102

Re: International Astronomy Show starring the amazing Mark Townley

Pity I was unable to make it. Sounds like it'll be on next year... have to remember to pencil it in.

Well done all!

PEter
by PEterW
Tue Apr 02, 2013 10:05 pm
Forum: This is SolarChat !!
Topic: Finally clear......!!
Replies: 9
Views: 515

Finally clear......!!

First clear blue day in what feels like years, who cares if it is a bit chilly. Anyhow nipped out at lunch to grab some data, processed tonight. Whitelight and CaK taken with an 80mm refractor (Intes wedge/Continuum filter and Lunt B600 Cak filter), H-alpha with a Lunt60PT. All taken prime focus on ...
by PEterW
Mon Jan 28, 2013 10:27 pm
Forum: Solar Scope Modifications
Topic: LS60 double stacking idea?
Replies: 3
Views: 982

LS60 double stacking idea?

Random idea about double stacking a lunt ls60.... will it work.Seeing that my ls60 focusses with the back filter tube and focuses with the focusser a bit out too iwas wondering.... If you could get a PST etalon unit in the focusser tube to double the stack the scope. As it is an f8 it would need to ...
by PEterW
Wed Jan 16, 2013 8:09 am
Forum: This is SolarChat !!
Topic: Cracking the CaK Code - First Look at the Blue Side For 2013
Replies: 13
Views: 874

Re: Cracking the CaK Code - First Look at the Blue Side For 2013

Sure looks like a grown up CaK image looks like! Looks like yer magic has worked!

PEterW
by PEterW
Sun Sep 23, 2012 6:44 am
Forum: This is SolarChat !!
Topic: Calculating what focal reducer I need
Replies: 9
Views: 1125

Re: Calculating what focal reducer I need

Got mine from ModernAstronomy in the UK, PST users need them too.

PEterW
by PEterW
Sat Sep 22, 2012 6:33 am
Forum: This is SolarChat !!
Topic: Calculating what focal reducer I need
Replies: 9
Views: 1125

Re: Calculating what focal reducer I need

With most reducers it depends how far from the camera they are how much reduction you get. At prime focus with a dmk41 you see all the disk except a little bar of the top, a generic 0.5x reducer on a shorty nosepiece makes it comfortably all on chip. A slight amount of tiling gives you a higher reso...
by PEterW
Fri Sep 21, 2012 9:34 pm
Forum: This is SolarChat !!
Topic: AR 1575 on the 21st ---- AutoStakkert question added?
Replies: 8
Views: 482

Re: AR 1575 on the 21st

Yes if you select the add in a bit of raw stack option or is it the HQ option, i set both on normally. One is nice and contrasty and sharpened and the other is the stacked result. I was happy with the final auto processed result on my recent CaK data. Even improved it by a 1.5x drizzle though some v...
by PEterW
Mon Sep 17, 2012 8:10 am
Forum: This is SolarChat !!
Topic: Hightlights from Saturday mornings Session - Calcium Shootout!
Replies: 19
Views: 976

Re: Hightlights from Saturday mornings Session - Calcium Shootout!

Not sure the reflection would get back in again. I noticed the filter reflection as an off centre bright path on the front objective of my 80mmWO refractor. Hitting a curved lens will put the back reflection further off axis. I am quite happy with my CaK contrast, just need to find a at to up the ap...
by PEterW
Mon Sep 17, 2012 8:06 am
Forum: This is SolarChat !!
Topic: Surrey Science Circus Outreach event report
Replies: 7
Views: 597

Re: Surrey Science Circus Outreach event report

No tables, so the Netbook went on the little camping stool I brought along. Had to crouch down the whole day, now legs are in agony, stairs especially bad! Good day though, so worth a bit of suffering!

PEter
by PEterW
Sun Sep 16, 2012 3:47 pm
Forum: This is SolarChat !!
Topic: Surrey Science Circus Outreach event report
Replies: 7
Views: 597

Surrey Science Circus Outreach event report

Joined my old Guildford Astronomical Society colleagues at their solar observing event at the Surrey Science Circus on Saturday 15th. Couple of white light, one 60mm Solarmax h-alpha and my 80mm WO with Lunt B600 CaK filter with DMK41. Different scopes showing different things on the sun.... Mugged ...
by PEterW
Sat Sep 15, 2012 8:26 pm
Forum: This is SolarChat !!
Topic: solar features in the last month's
Replies: 8
Views: 670

Re: solar features in the last month's

Wow! Very good images, I like the ones with the prominences the best, what telescope did you use?

PEterW
by PEterW
Sun Sep 09, 2012 5:23 pm
Forum: This is SolarChat !!
Topic: CaK 6thSept (not enough zoom!)
Replies: 3
Views: 605

CaK 6thSept (not enough zoom!)

First session for too long, grabbed whilst the washing machine was running before a foreign business trip last week (6th) . I used the EQ6 to remove tracking issues, but only used the 2x barlow instead of the 3x I though I had used!! I have run the vids though our fave 3 progs and it appears that As...
by PEterW
Thu Sep 06, 2012 6:46 pm
Forum: This is SolarChat !!
Topic: Calcium K imaging with Baader CaK filter
Replies: 10
Views: 992

Re: Calcium K imaging with Baader CaK filter

Interesting the see the stark difference between the filter and cak module. I agree with mark, keep the ND small to keep the exposures short... Cameras are expendable, eyeballs not!

Peter
by PEterW
Thu Sep 06, 2012 6:42 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: What to do with a PST minus the etalon
Replies: 17
Views: 2815

Re: What to do with a PST minus the etalon

The focal length will be he same, but you wI'll have lost the thickness of the etalon and lens unit, so the focus will now be short??

Cheers

Peter
by PEterW
Thu Aug 02, 2012 6:59 pm
Forum: Solar Scope Modifications
Topic: PST Etalon Assembly / Disassembly Video
Replies: 279
Views: 30385

Re: PST Etalon Assembly / Disassembly Video

The only thing that matters for the etalon is the central parallel reflective surfaces that the spacers maintain he separation of. Not sure what you would be wedging.

PEterW