201408221540UTCFlare

201408221540UTCFlare

Description:

22 Aug 2014 1540 UTC AR2146 C6.2 flare.

Accidentally captured the flare while getting some practice in. Was doing some full frame captures at 3.75 FPS to 15 FPS with the ROI settings I used. Am only able to achieve 3.75 FPS for full frame by setting aside 2GB of ram as a ram disk. Performance is much worse when saving directly to the SSD. 

Imaging Site: My front-yard in San Diego, Ca. Today was another one of those rare mornings that we didn't have the marine layer, so took advantage of the steady skies just after sunrise before the Sun starting heating the rooftops and blacktop streets up. Went to long though, the last few capture runs were really terrible, most of them I trashed (of course there were my mistakes also that I had to trash).

I also forgot to reorient the image, North is not up.

Date: 22 Aug 2014  1540 UTC

Scope and f/: Lunt LS100THa (Hydrogen-Alpha filtered) with BF1800 at f/17.5 (via a installed 2.5x Powermate). The DSII (double stack filter) is installed.

Mount: Takahashi NJP.

Guiding: None.

Camera: Point Grey Grasshopper Express (GX-FW-60SM-C) monochrome video camera with a ICX694 sensor. Camera is operating in 2736x2192 Format 7 mode with full frame to various hardware ROI settings.

Camera temperature: N/A

Camera binning: None.

Number of sub-images and exposure: Various frames from each captured video.

Filters: Installed a IR block filter for grins, I can't tell if it made a difference or not.

Image Calibration: Automatic flat processing during capture via Astro IIDC.

Control, capture and processing with: Astro IIDC and Photoshop on a Mac.


Images may be used for personal and/or educational use only.