Mohon pandangan - Solar telescope setup

[redzuan]

Hello semua,

Nak tanya sikit. Saya tengah planning untuk satu set teleskop buat imaging secara berterusan setiap minit permukaan matahari mencari flare dan prominence serta dark filamen. Continuous sbb flare terjadi susah nak ramal dan sekejap sahaja. So kene buat berterusan, kemudian baru proses (tgk balik).

Kene high res sket, tapi takde la sampai >5MP.

Cadangan setup 1

• Lunt 100mm (single stack <0.7 A)

• CCD camera/Canon 50D

[/list]


Cadangan setup 2

• 2 set Lunt 60mm (double stack 0.5 A)

• 2 set DMK (resolution - 1280x960)

Setiap satu 60mm & DMK akan imej 50% dari matahari...



Mana setup yang lagi menarik jika harga tak jauh beza (setup 1 lebih sket je dr setup 2).

Rujukan setup org lain yang dah buat mende yang sama... guna satu DMK utk imej satu full disk tapi tak dapat high resolution pula...
Ni satu contoh[/list]

[universe24]

Lunt 100mm definately better than 60mm due to larger aperture higher resolution and light collecting power.
About CCD camera, better choose those can have capture high frame rate of 3fps or higher, so we can do stacking to overcome the daytime seeing.
I personally suggest Lumenera cameras as it is high frame rate and 12 bits data. Dynamic range better.
No DSLR or any color CCD for H-alpha solar imaging.
The minimum image dimension better be 1024 x 1024 or higher.

[redzuan]

I've looked at the Lunt 100mm but it cannot get a full disk image. Unless coupled with a CCD camera with a sensor the size similar to an APS or APC.

One more thing I would like to ask if Coronado's image output is better than a Lunt's and which one is much more worth it? for <0.5A and also <0.7A. Need to also consider similar aperture.

SkyNyx camera is out of the reach so far so that will have to wait and thats why I'm considering the DMK solution.

So is the 100mm (double-stacked) coupled with a CCD like QHY9, a simple and sweet solution?

And also, is video a better solution than stacking a few single images?

[shahgazer]

And also, is video a better solution than stacking a few single images?

I can help in this one..

video holds an advantage. It can 'generate' hundreds of individual images from a single AVI file.

For example, a video file with the rate of 30 frame per second, can generate 1800 frames for just a single minute of exposure.

Among the 1800 frames, some will be good and bad, due to atmospheric turbulence.

Thus, at average,  say when using Registax, we can get about 400 good images to stack.

This 400 images will average out any distortion within each frame, thus giving a clearer final stack image.

That's why we can see almost all fabulous planetary images (be it planet, sun and moon) taken with cameras with video capability (webcam, DMK just to name a few), and rivals that of CCD images   

See HERE 

No single camera can do all. So, at best we need to decide what exactly is our target.

Don't compare CCD vs DSLR vs Toucam vc Mallincam vs DMK vs etc etc etc...

It's like comparing Avanza vs Mountain Bike vs Mercedes vs Boeing 747 vs etc etc... 

.. a never ending debate in which will never find any winner.. 

.. so the best is,  let's complement each equipment that we have, and than we can have a wider range of results (planetary and deep sky), and FEEL GOOD about it.. 





 

[universe24]

100mm + QHY9 is actually ok also. But I personally don't like the download time of the CCD at 9s.
But if you feel you can accept the 9s long download time, then go ahead with it.
For reference image quality, you can refer to LNO solar observatory's h-alpha images which taken using similar CCD.

Lunt should have better image than Coronado, while Coronado has better visual than Lunt.

For Lumenera product, not nescessory to choose SKY-nyx series, there got some other series which in high mp as big as full frame size at 3.5fps.

I think you gonna fix your observation target. Flares / prominences revolution monitoring, or some other purposes. From there we can narrow down the choice of equipments to fullfill the purposes.

[farah1911]

Observation target is flare and prominence monitoring. any better suggestion for the equipment??

[shahgazer]

Observation target is flare and prominence monitoring. any better suggestion for the equipment??

so kena ada full-disk satu.. untuk monitoring sekali imbas.

and satu lagi hi-res camera for zooming in certain features..

2 scope + 2 camera?

[shahgazer]

another option for 'monitoring mode' is ... i know some tak suka... using Mallincam 

Direct live video feed.. no processing needed. In fact boleh buat live streaming at internet.

contoh



 

[shahgazer]

a few more shots..

keep in mind, those screenshots are from live video feed.










So, after you have identify the potential flares or prominence, then baru la zoom in via DMK ke..

[universe24]

2 scope + 2 camera...idea yang bagus.

Mallincam yg diguna tu color version atau B/W version?

[shahgazer]

2 scope + 2 camera...idea yang bagus.

Mallincam yg diguna tu color version atau B/W version?

hehe.. racun-mode ON.

Mallincam tu Color version.

[redzuan]

Scope tu rasanya dah narrow down to Lunt or Coronado 60mm double stack... Masing2 focal length beza 100mm.

So skrang tinggal nak cari dia punyer kamera sahaja.

Best pula tgk mallincam ni...
Dengan size sensor 1/2 inch dia, besor...
Telaga dia pun DALAM...

Cuma resolution dia... mungkin kurang sket sekitar 811 X 508 pixel sahaja... Kelebihan dia pelbagai guna la. Siap bleh guna untuk malam lagi tu...

Kene cable tambahan untuk power juga kan? Kalao DMK mudah dan murah sket, dan jimat cable?

Ada refer kat seorang yang dah pernah buat full disk imaging, dia cadangkan Point Grey Flea camera pula. Nampak mcm besh. Bleh capture 5MP video 9fps on 2/3" sensor. Lagi tinggi dari HD resolution. Just that availability dia skrang, tiada stock untuk high res.

[universe24]

Menurut pengalaman saya, kalau pilih Lunt 60, DMK41 tu terlalu fit utk full disk imaging. Solar limb akan sangat dekat dgn limb CCD.
So Lumenera SKY-nyx 2-1 lebih sesuai. Juga hi-res sikit drpd DMK41.

Kalau pilih Coronado 60, maka tiada masalah utk pilih DMK41.

[redzuan]

Menurut pengalaman saya, kalau pilih Lunt 60, DMK41 tu terlalu fit utk full disk imaging. Solar limb akan sangat dekat dgn limb CCD.
So Lumenera SKY-nyx 2-1 lebih sesuai. Juga hi-res sikit drpd DMK41.

Kalau pilih Coronado 60, maka tiada masalah utk pilih DMK41.

So kita cuba untuk beli dua2 configuration diatas... dalam bajet yang ada...


Nanti mau compare dgn UM punye standard boleh ka Mr Universe?