AR2574 & AR2575
- [whrudey]
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AR2574 & AR2575
Been a while since I've posted any images - spending most of my time in my shop machining parts for the new 12" Solar Newton. Today's conditions quite hazy giving rise to but modest images.
New system seems to be working nicely.
Enjoy,
Bill
New system seems to be working nicely.
Enjoy,
Bill
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Re: AR2574 & AR2575
Good results Bill. Was wondering where your images had gone earlier today, hope first light isn't far off with that new scope.
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Re: AR2574 & AR2575
Very nice shots!!!
JP
JP
Réfractor Spécial H-Alpha (Istar optical ) 230mm F/D 9
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Solar Télescope Cassegrain CFF 350mm F/D 20 Clearceram + ERF-D Tri Band 312mm ARIES Instruments.
TN 450mm F/D 4 Zerodur
Web Site : http://jp-brahic.chez-alice.fr/
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Re: AR2574 & AR2575
Lovely granulation and sunspots, Bill.
Stu.
Stu.
H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
- [whrudey]
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Re: AR2574 & AR2575
Thanks everyone - comments appreciated.
As for the new scope under construction, in the near future, I'll send some images along showing progress (https://www.solarchatforum.com/viewtopi ... =9&t=20050). Currently working on the RA drive which will be belt driven with a stepper motor, Raspberry Pi and Arduino controller. The belt drive is a good system and, I'd used it before on a split ring mount for another 12" Newtonian - see image below.
For the DEC axis, I'll use a tangent arm since the range of movement for solar work is smaller. Currently waiting for an order of steel from Metal Depot for the base and pedestal. Obtaining these materials/parts locally is more than a challenge and, everything has to be imported.
So far have been using the ASI174MM with rather large pixels (5.86um). My sense is that although the 12" scope will have much better resolution (Dawe's limit), the coarser pixels may not pick up full detail within granules. Thus, looking to an ASI290mm (2.9um) even though the FOV will be smaller. Any thoughts on this matter ?
Cheers,
Bill
As for the new scope under construction, in the near future, I'll send some images along showing progress (https://www.solarchatforum.com/viewtopi ... =9&t=20050). Currently working on the RA drive which will be belt driven with a stepper motor, Raspberry Pi and Arduino controller. The belt drive is a good system and, I'd used it before on a split ring mount for another 12" Newtonian - see image below.
For the DEC axis, I'll use a tangent arm since the range of movement for solar work is smaller. Currently waiting for an order of steel from Metal Depot for the base and pedestal. Obtaining these materials/parts locally is more than a challenge and, everything has to be imported.
So far have been using the ASI174MM with rather large pixels (5.86um). My sense is that although the 12" scope will have much better resolution (Dawe's limit), the coarser pixels may not pick up full detail within granules. Thus, looking to an ASI290mm (2.9um) even though the FOV will be smaller. Any thoughts on this matter ?
Cheers,
Bill
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Re: AR2574 & AR2575
Well done Bill !
Christian Viladrich
Co-author of "Planetary Astronomy"
http://planetary-astronomy.com/
Editor of "Solar Astronomy"
http://www.astronomiesolaire.com/
Co-author of "Planetary Astronomy"
http://planetary-astronomy.com/
Editor of "Solar Astronomy"
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- [whrudey]
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Re: AR2574 & AR2575
Thanks Christian and Alexandra for your encouraging comments. Remember, Christian deserves credit for being the inspiration that led to my constructing the 8" Solar Newton scope - and, now the 12" scope currently underway.
Cheers,
Bill
Cheers,
Bill
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Re: AR2574 & AR2575
Hi Bill...
Very sharp WL pics...well done
I find the ZWO174 works quite nicely...any reason not to use a barlow to bump the resolution at the chip? A 2x barlow should provide close to the same resolution, but not much difference in the FOV than the 290. The 290 works quite nicely on its own too.
Brian
Very sharp WL pics...well done
I find the ZWO174 works quite nicely...any reason not to use a barlow to bump the resolution at the chip? A 2x barlow should provide close to the same resolution, but not much difference in the FOV than the 290. The 290 works quite nicely on its own too.
Brian
Brian Colville
Maple Ridge Observatory
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Photos: https://www.flickr.com/photos/185395281@N08/albums
10'x15 Roll-off Roof Observatory
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C14 + Lunt 80ED
Deep Sky Work - ASI294MM Pro+EFW 7x36/Canon 60D (Ha mod), ONAG
Planetary Work - SBIG CFW10, ASI462MM
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WL, G-Band & CaK Setup: Lunt Wedge & Lunt B1800CaK, Baader K-Line and Altair 2nm G-Band filter
ASI1600MM, ASI432MM, ASI294MM Pro, ASI174MM, ASI462MM
Maple Ridge Observatory
Cambray, ON Canada
Photos: https://www.flickr.com/photos/185395281@N08/albums
10'x15 Roll-off Roof Observatory
Takahashi EM400 Mount carrying:
C14 + Lunt 80ED
Deep Sky Work - ASI294MM Pro+EFW 7x36/Canon 60D (Ha mod), ONAG
Planetary Work - SBIG CFW10, ASI462MM
2.2m Diameter Dome
iOptron CEM70G Mount carrying:
Orion EON 130ED, f7 OTA for Day & Night Use
Ha Setup: Lunt LS80PT/LS75FHa/B1200Ha + Home Brew Lunt Double Stack/B1800Ha on the Orion OTA + Daystar Quantum
WL, G-Band & CaK Setup: Lunt Wedge & Lunt B1800CaK, Baader K-Line and Altair 2nm G-Band filter
ASI1600MM, ASI432MM, ASI294MM Pro, ASI174MM, ASI462MM
- [whrudey]
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Re: AR2574 & AR2575
Hi Brian;
Thanks for responding to my question re: ASI174MM vs ASI290MM. I am using a Televue 4x's PowerMate with which I'm quite pleased. My concern was the very large pixels with the ASI174MM at 5.86 um. I reasoned that I could capture more detail with the ASI290MM at literally half the sized pixels. It makes sense to me - was wondering about others.
Cheers,
Bill
Thanks for responding to my question re: ASI174MM vs ASI290MM. I am using a Televue 4x's PowerMate with which I'm quite pleased. My concern was the very large pixels with the ASI174MM at 5.86 um. I reasoned that I could capture more detail with the ASI290MM at literally half the sized pixels. It makes sense to me - was wondering about others.
Cheers,
Bill
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Re: AR2574 & AR2575
Hi Bill...
I think you will find that a 2x barlow ahead of the 174 will give essentially the FOV and resolution as the 290...the pixels and chip array are basically differ by a factor of 2. The 174 has 2x the pixels at 2x the size, a 2x barlow essentially produces the same field/resolution as the 290 with no barlow.
I just wish they has a square version of the 290 great for full disks at shorter focal lengths.
Brian
I think you will find that a 2x barlow ahead of the 174 will give essentially the FOV and resolution as the 290...the pixels and chip array are basically differ by a factor of 2. The 174 has 2x the pixels at 2x the size, a 2x barlow essentially produces the same field/resolution as the 290 with no barlow.
I just wish they has a square version of the 290 great for full disks at shorter focal lengths.
Brian
Brian Colville
Maple Ridge Observatory
Cambray, ON Canada
Photos: https://www.flickr.com/photos/185395281@N08/albums
10'x15 Roll-off Roof Observatory
Takahashi EM400 Mount carrying:
C14 + Lunt 80ED
Deep Sky Work - ASI294MM Pro+EFW 7x36/Canon 60D (Ha mod), ONAG
Planetary Work - SBIG CFW10, ASI462MM
2.2m Diameter Dome
iOptron CEM70G Mount carrying:
Orion EON 130ED, f7 OTA for Day & Night Use
Ha Setup: Lunt LS80PT/LS75FHa/B1200Ha + Home Brew Lunt Double Stack/B1800Ha on the Orion OTA + Daystar Quantum
WL, G-Band & CaK Setup: Lunt Wedge & Lunt B1800CaK, Baader K-Line and Altair 2nm G-Band filter
ASI1600MM, ASI432MM, ASI294MM Pro, ASI174MM, ASI462MM
Maple Ridge Observatory
Cambray, ON Canada
Photos: https://www.flickr.com/photos/185395281@N08/albums
10'x15 Roll-off Roof Observatory
Takahashi EM400 Mount carrying:
C14 + Lunt 80ED
Deep Sky Work - ASI294MM Pro+EFW 7x36/Canon 60D (Ha mod), ONAG
Planetary Work - SBIG CFW10, ASI462MM
2.2m Diameter Dome
iOptron CEM70G Mount carrying:
Orion EON 130ED, f7 OTA for Day & Night Use
Ha Setup: Lunt LS80PT/LS75FHa/B1200Ha + Home Brew Lunt Double Stack/B1800Ha on the Orion OTA + Daystar Quantum
WL, G-Band & CaK Setup: Lunt Wedge & Lunt B1800CaK, Baader K-Line and Altair 2nm G-Band filter
ASI1600MM, ASI432MM, ASI294MM Pro, ASI174MM, ASI462MM
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- [whrudey]
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Re: AR2574 & AR2575
Firstly many thanks Eroe and yltsang for your kind comments.
Secondly, Brian thanks for you thoughts on the issue of pixel size with the ASI17MM vs. the ASI290MM. Correct me if you think I'm wrong but, my thinking was along these lines. If one keeps the optical train the same and ignores FOV, then placing a 5.86um pixel vs. a 2.9um pixel sensor at the focal plane, finer detail should result with the smaller pixel - literally twice the detail. Much as I like the ASI174MM, it's my sense that when I enlarge my images, fine detail is lost in the granules. Am I missing something.
Yours and anyone else's thoughts welcomed.
Cheers,
Bill
Secondly, Brian thanks for you thoughts on the issue of pixel size with the ASI17MM vs. the ASI290MM. Correct me if you think I'm wrong but, my thinking was along these lines. If one keeps the optical train the same and ignores FOV, then placing a 5.86um pixel vs. a 2.9um pixel sensor at the focal plane, finer detail should result with the smaller pixel - literally twice the detail. Much as I like the ASI174MM, it's my sense that when I enlarge my images, fine detail is lost in the granules. Am I missing something.
Yours and anyone else's thoughts welcomed.
Cheers,
Bill
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Re: AR2574 & AR2575
Hello Bill,
I don't remember what is the F/D ratio of your 8" ? Now you have mastered the X4 Power mate, you could go for a X6 Barlow lens. I have the FFC Baader, but it is very expensive.
The idea of moving to smaller pixel size is also interesting. 2.9 um pixel could do the job with a X3 Barlow lens. This beeing said, I've not tested the ASI290 camera.
Cheers
Christian
I don't remember what is the F/D ratio of your 8" ? Now you have mastered the X4 Power mate, you could go for a X6 Barlow lens. I have the FFC Baader, but it is very expensive.
The idea of moving to smaller pixel size is also interesting. 2.9 um pixel could do the job with a X3 Barlow lens. This beeing said, I've not tested the ASI290 camera.
Cheers
Christian
Christian Viladrich
Co-author of "Planetary Astronomy"
http://planetary-astronomy.com/
Editor of "Solar Astronomy"
http://www.astronomiesolaire.com/
Co-author of "Planetary Astronomy"
http://planetary-astronomy.com/
Editor of "Solar Astronomy"
http://www.astronomiesolaire.com/
- [whrudey]
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Re: AR2574 & AR2575
Hi Christian;
The 8" version is f/6. The 12" version that I'm currently building will be f/5. Given space considerations, I wanted to overall length down. I wasn't aware that Barlow's came at x6 but, the Baader FFC is quite pricey. I'm pleased with the TV4 though it is quite heavy.
There is some controversy regarding smaller pixel size yet, my thoughts above seemed to make sense to me. Will try out an ASI290MM once the new scope is operational.
Always appreciate your input.
Cheers,
Bill
The 8" version is f/6. The 12" version that I'm currently building will be f/5. Given space considerations, I wanted to overall length down. I wasn't aware that Barlow's came at x6 but, the Baader FFC is quite pricey. I'm pleased with the TV4 though it is quite heavy.
There is some controversy regarding smaller pixel size yet, my thoughts above seemed to make sense to me. Will try out an ASI290MM once the new scope is operational.
Always appreciate your input.
Cheers,
Bill
Re: AR2574 & AR2575
Hi Bill:
New to the group here (first post.) I've been reading what I can on the web, trying to figure out which camera would be a better fit for imaging with my Lunt LS60/B1200 - an ASI174MM or an ASI290MM. I do want to be able to do full disc without stitching. Since you have had both for a year now, what would be your recommendations / observations? Thanks much!
Peace and blessings,
Donn
New to the group here (first post.) I've been reading what I can on the web, trying to figure out which camera would be a better fit for imaging with my Lunt LS60/B1200 - an ASI174MM or an ASI290MM. I do want to be able to do full disc without stitching. Since you have had both for a year now, what would be your recommendations / observations? Thanks much!
Peace and blessings,
Donn
- [whrudey]
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Re: AR2574 & AR2575
Hi Don;
Almost missed this one since the original post was a year ago. The simple answer is the ASI174MM - love it and am now buying another with built in cooling. Though I bought an ASI290MM for its small pixel size, I've not been all that impressed with it. Could be good for planetary work.
Hope the above is helpful.
Bill
Almost missed this one since the original post was a year ago. The simple answer is the ASI174MM - love it and am now buying another with built in cooling. Though I bought an ASI290MM for its small pixel size, I've not been all that impressed with it. Could be good for planetary work.
Hope the above is helpful.
Bill
Re: AR2574 & AR2575
Hi Bill:
That's exactly what I was looking for - firsthand feedback from someone who has used both cameras. Thanks much!
Peace and blessings,
Donn
That's exactly what I was looking for - firsthand feedback from someone who has used both cameras. Thanks much!
Peace and blessings,
Donn
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Re: AR2574 & AR2575
Bill,
do you use additional filters? Continuum, Ha or OIII??
do you use additional filters? Continuum, Ha or OIII??
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