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by MapleRidge
Tue Mar 02, 2021 9:42 pm
Forum: Solar Scope Modifications
Topic: Sweet spot, banding and tilted etalons ...where are the limits ?
Replies: 47
Views: 513

Re: Sweet spot, banding and tilted etalons ...where are the limits ?

Hi all... This is quite the read, and need to go over it a few more times. I have a question about the sweet spot ration from the d/D ratio. Does the result, say .2, have any units associated with it or is it 0.2 of the actual field of view, or some other relative detail? Just trying to make sense o...
by MapleRidge
Tue Mar 02, 2021 9:36 pm
Forum: Solar Scope Modifications
Topic: OTA baffle hack for easy filter / optic install ; internal Ir/UV - plano concave
Replies: 3
Views: 62

Re: OTA baffle hack for easy filter / optic install ; internal Ir/UV - plano concave

I used this method to mount the 110mm D-ERF inside the tube of the 150mm Celestron refractor that I modified.

As you say, works like a charm.

Brian
by MapleRidge
Tue Mar 02, 2021 3:26 pm
Forum: This is SolarChat !!
Topic: Today's SUN (20210301) | SM90II - not just a paperweight
Replies: 15
Views: 223

Re: Today's SUN (20210301) | SM90II - not just a paperweight

Another 90mm...I'll bet you want to be able to test it to ensure it is worth more than the 60mm equivalent value of the one you have ;)

Brian
by MapleRidge
Tue Mar 02, 2021 3:23 pm
Forum: This is SolarChat !!
Topic: New Setup, New Pier 26th February
Replies: 32
Views: 259

Re: New Setup, New Pier 26th February

Hi Mark...

Great to see the pier installed and setup with your scopes...very impressive !!!

The solar images look equally great too...nice details all around :bow

Brian
by MapleRidge
Tue Mar 02, 2021 3:19 pm
Forum: This is SolarChat !!
Topic: I got 1 word for my new solarmax iii..
Replies: 17
Views: 161

Re: I got 1 word for my new solarmax iii..

Always nice to have the experience at the eyepiece support the decision to part with cash ;)

Brian
by MapleRidge
Tue Mar 02, 2021 3:17 pm
Forum: This is SolarChat !!
Topic: Partial and full disc views from the 26th
Replies: 8
Views: 71

Re: Partial and full disc views from the 26th

Superb images and that prom is wonderful catch :bow

Brian
by MapleRidge
Tue Mar 02, 2021 3:15 pm
Forum: This is SolarChat !!
Topic: Sun in Ha and CaK 1st March '21
Replies: 6
Views: 84

Re: Sun in Ha and CaK 1st March '21

Hi Stu...

Nice FD images from the session :bow

Brian
by MapleRidge
Tue Mar 02, 2021 3:08 pm
Forum: This is SolarChat !!
Topic: 1st March
Replies: 8
Views: 97

Re: 1st March

Great image Robert :bow

Brian
by MapleRidge
Tue Mar 02, 2021 3:07 pm
Forum: This is SolarChat !!
Topic: Fun in the Sun on Monday 1st March 2021
Replies: 20
Views: 166

Re: Fun in the Sun on Monday 1st March 2021

These are fabulous image Alexandra...well done :bow

Brian
by MapleRidge
Tue Mar 02, 2021 3:00 pm
Forum: This is SolarChat !!
Topic: three lights 27/2/21 still ss h alpha ds hasn't arrived yet bummer
Replies: 10
Views: 113

Re: three lights 27/2/21 still ss h alpha ds hasn't arrived yet bummer

A good set of FD images Dave...well done :bow

Brian
by MapleRidge
Tue Mar 02, 2021 2:58 pm
Forum: This is SolarChat !!
Topic: 2021-03-01 - A few quick lunchtime disks
Replies: 10
Views: 89

Re: 2021-03-01 - A few quick lunchtime disks

A very nice FD image Jochen :bow

Brian
by MapleRidge
Tue Mar 02, 2021 2:56 pm
Forum: This is SolarChat !!
Topic: 1.03.2021 A couple of snaps.
Replies: 9
Views: 91

Re: 1.03.2021 A couple of snaps.

Great images and the prom is especially impressive :bow

Brian
by MapleRidge
Tue Mar 02, 2021 2:54 pm
Forum: This is SolarChat !!
Topic: Sunday Sunshine - 28th February
Replies: 7
Views: 63

Re: Sunday Sunshine - 28th February

Superb series of images Mark...very well done :bow

Brian
by MapleRidge
Tue Mar 02, 2021 2:51 pm
Forum: This is SolarChat !!
Topic: halpha sun of March 1st
Replies: 10
Views: 102

Re: halpha sun of March 1st

Great solar images and very nice pic of the observing site Stephane :bow

Brian
by MapleRidge
Tue Mar 02, 2021 2:49 pm
Forum: This is SolarChat !!
Topic: halpha animation of the 1st of March
Replies: 8
Views: 82

Re: halpha animation of the 1st of March

Nice animation!!!

Brian
by MapleRidge
Tue Mar 02, 2021 2:44 pm
Forum: This is SolarChat !!
Topic: Today's SUN (20210301) | SM90II - not just a paperweight
Replies: 15
Views: 223

Re: Today's SUN (20210301) | SM90II - not just a paperweight

Superb series of images Pedro :bow

The 90/60mm DS looks very good...too bad the 90mm is limited to this use to get the best out of it. I'll bet it adds a lot of weight to the scope!

Brian
by MapleRidge
Tue Mar 02, 2021 2:33 pm
Forum: This is SolarChat !!
Topic: Full disk 28-02-2021
Replies: 8
Views: 72

Re: Full disk 28-02-2021

Excellent FD images Rainer...well done :bow

Brian
by MapleRidge
Mon Mar 01, 2021 1:41 pm
Forum: Sunlit Earth
Topic: Moon, February 27th, 2021
Replies: 8
Views: 63

Re: Moon, February 27th, 2021

Great lunar mosaic Frank...well done :bow

Brian
by MapleRidge
Mon Mar 01, 2021 1:20 pm
Forum: This is SolarChat !!
Topic: AR2804 27-02-2021 H-alpha
Replies: 8
Views: 89

Re: AR2804 27-02-2021 H-alpha

Hi Richard... I use the Quantum infrequently, generally come out on days of very good seignior (by my standards) and there is some excellent details to image. The Lunt is just easier to use...the pressure tuner responds immediately where the Quantum takes time to heat to the base temperature then mo...
by MapleRidge
Mon Mar 01, 2021 1:20 pm
Forum: This is SolarChat !!
Topic: Ordered Lunt 80mm, could use some advice!
Replies: 30
Views: 535

Re: Ordered Lunt 80mm, could use some advice!

Hi Andrew... The pattern has been documented by some and does not show for others, so it is a bit of a risk. It could be the effect of bad USB cables or ports which could answer part of the inconsistent responses seen. It has kept me form investing in one, though I'd like it for lunar work too. I ha...
by MapleRidge
Sun Feb 28, 2021 1:22 pm
Forum: This is SolarChat !!
Topic: Some images with Solar Refractor 228mm
Replies: 9
Views: 106

Re: Some images with Solar Refractor 228mm

Incredible images Ale...well done :bow

Brian
by MapleRidge
Sun Feb 28, 2021 1:21 pm
Forum: This is SolarChat !!
Topic: AR2804 27-02-2021 H-alpha
Replies: 8
Views: 89

Re: AR2804 27-02-2021 H-alpha

Well done Richard!!!

Brian
by MapleRidge
Sun Feb 28, 2021 1:20 pm
Forum: This is SolarChat !!
Topic: Sun 26.2. 150mm Mak
Replies: 5
Views: 85

Re: Sun 26.2. 150mm Mak

Hi Martin...

Nice set of images!!!

Brian
by MapleRidge
Sun Feb 28, 2021 1:18 pm
Forum: This is SolarChat !!
Topic: White Light Herschel/Solar Wedges
Replies: 32
Views: 217

Re: White Light Herschel/Solar Wedges

Impressive collection of equipment Pedro :bow

Brian
by MapleRidge
Sun Feb 28, 2021 1:16 pm
Forum: This is SolarChat !!
Topic: Solar observation with two old (XIX/early XX century) refractors
Replies: 18
Views: 176

Re: Solar observation with two old (XIX/early XX century) refractors

Great post Pedro...the old refactors are a treat to see !!!

Brian

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