From: "cosmicrock2001" <ursamajor_1@mac.com>

Date: March 17, 2012 12:36:42 PM MDT

To: Astro_IIDC@yahoogroups.com

Subject: Re: Maaaars!

Thats ok,  I forgot my PGR scorpion has FW800 output and when imaging the sun earlier this week had it plugged into the 400 and couldn't understand why it wouldn't go over 15 fps- Duh! Its hell keeping track of all this stuff if you are under crappy skies 1/2 the year -and am an old fart like me!  

Ron

--- In Astro_IIDC@yahoogroups.com, Jim Chung <jim_chung@...> wrote:

Thanks Alan & Ron,

Ron - I am a fool!  You're right, my 17" does indeed have a FW800  

port, I just never looked closely.  And to be a bigger fool I spent  

money buying a FW800 to FW400 cable.   Pffhhht!

Jim

Quoting cosmicrock2001 <ursamajor_1@...>:

Very nice Mars Jim!  I'm still waiting on good seeing.   I have a  

similar vintage Macbook Pro (Intel 2.2) and it has a FW800, are you  

sure yours doesn't?   The new ones may not have FW800 but the new  

'thunderbolt'?

I presume you've max'd out your ram.  Have you thought about faster  

hard drives?  I need more cap. at least, and have been looking at  

these hybrid 7200rpm drives, which have some capacity as solid state  

drives which makes them faster than a standard 7200 rpm drive.  A  

SSD would be great, but they're still kinda pricey for me in big  

enough storage for all the astro videos.

http://eshop.macsales.com/item/Seagate/ST750LX003/

comments about these drives, from Milton or others appreciated.

Ron

--- In Astro_IIDC@yahoogroups.com, "matt carmine" <jim_chung@> wrote:

I was doubly blessed last night.  Thin scattered clouds that  

plagued us at sunset cleared by 10 pm and good to very good seeing  

ensued well past midnight.  This was also one of those rare  

opportunities when buying astro tech where it definitely pays to  

live in Canada.  I ordered the Flea3 with the ICX618 sensor from  

PGR on Thursday morning and they FedEx shipped it that afternoon  

from Vancouver.  I got it Friday morning, what service!

I was happy with the imaging results:

http://dl.dropbox.com/u/4852049/MarsMarch16RGB.jpg

The ICX618 is apparently the most sensitive sensor out there and  

very popular as such.  I'm not sure I noticed a large difference in  

that regard with the Scorpion.  It does seem to be less noisy so I  

can apply higher gains more easily.  And I do get to shoot at a  

real 30 fps since the ROI'd Scorpion tops out at around 24 fps?  I  

even tried 60 fps last night but had to half the size of the video  

frame to achieve the bandwidth under Firewire400.

Which got me thinking.  My Macbook Pro is 6 years old now.  If I  

bought a new one which has the Firewire800 port, I could achieve  

higher fps without fiddling under Format7.  They also come with SD  

card slots so would it be advantageous to write data direct to the  

card - would it have faster write times than to the HD?

Jim