Prominences 16, 19, 20 and 21 August. PST Composite Image

Hi,

I've been observing the h-alpha Sun quite a lot over past week and so I though I would combine four days of prominence observations into one single composite image.

The image below shows the changing appearance of prominences along the North-West solar limb, 16, 19, 20 and 21 August 2009.

Equipment/Software used:

40mm Coronado PST.
SPC900NC Webcam.
HandyAVI video capture.
Registax5.
Adobe Photoshop Elements 4.

Kindest regards,


Dave

Dave - out of interest, does that sequence allow for the rotation of the Sun - or is it that slow its not necessary?

Do you get to name the sungrazers by the way?

Hi,

The images have been rotated to bring the North-West limb uppermost and so the actual rotation of the Sun would be in the direction towards the top-right corner of the photo. From bottom to the top, the prominences are disappearing behind the solar limb.

Moving onto my Sungrazing Comet discoveries, as I do not own the SOHO Space Telescope --- I wish I did --- the comets I find are numbered i.e. SOHOXXX.

Here is a list of the 19 comets I have discovered while inspecting imagery downloaded from the SOHO's C2 and C3 cameras.

The short-hand descriptions include the following information about each discovery -

SOHO NUMBER, DATE VISIBLE, DESIGNATION, CAMERA, IAU CIRCULAR, MPEC, DISCOVERY DATE:

462 2002/06/13 C/2002 L7 C2 7930 2002-M22 2002/06/13

492 2002/06/16 C/2002 M8 C2 7948 2002-P08 2002/07/24

493 2002/04/23 C/2002 H7 C2 7948 2002-P08 2002/07/28

496 2002/05/30 C/2002 K10 C2 7951 2002-P17 2002/08/04

506 2002/08/29 C/2002 Q14 C3 7969 2002-R34 2002/08/29

509 2002/08/18 C/2002 Q12 C3 7969 2002-R34 2002/09/01

510 2002/08/27 C/2002 Q13 C3 7969 2002-R34 2002/09/01

523 2002/09/21 C/2002 S8 C3 7991 2002-T75 2002/09/21

539 2002/11/09 C/2002 V3 C2 8073 2003-B42 2002/11/09

551 2002/11/21 C/2002 W7 C2 8106 2003-G07 2002/11/21

553 2002/11/22 C/2002 W9 C3 8263 2004-A03 2002/11/22

584 2003/02/08 C/2003 C2 C3 8278 2004-B34 2003/02/09

589 2003/03/04 C/2003 E2 C3 8283 2004-C31 2003/03/04

616 2003/05/22 C/2003 K8 C2 8309 2004-F29 2003/05/24

640 2003/05/23 C/2003 K13 C2 8333 2004-H49 2003/06/28

692 2003/11/21 C/2003 W4 C2 8356 2004-K54 2003/11/21

788 2004/05/14 C/2004 J19 C2 8367 2004-N16 2004/05/23

823 2004/08/05 C/2004 P2 C3 8398 2004-R02 2004/08/05

827 2002/05/26 C/2002 K11 C2 8398 2004-Q11 2002/08/11

I have also discovered two X-Comets. NASA/LASCO believe these are most likely comets but the number of images in which they are visible is too few to confirm actual cometary movement.

X-Comet 2002/06/13 C2 2003/01/12

X-Comet 2003/05/19 C2 2003/06/28


I find I don't have the time to devote to comet hunting as I did. My interests have moved away from finding comets and more towards solar observing.

Kindest regards,


Dave


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