Reference data-sets#

This page identifies certain reference data-sets, not necessarily for science reasons but more for unusual modes that present special cases for testing analysis software.

Use of nexp_prp#

EIS has the capability of doing multiple exposures for each slit position (keyword nexp_prp>1), but this feature has rarely been used.

eis_l0_20091214_002533 - 100"x400" raster with two exposures of 150s at each slit position.
eis_l0_20070307_220220 - 10"x512" raster with two exposures of 30s and 120s

Slot data-sets#

40" slot raster#

Slot rasters are very widely used for context data (particularly PRY_slot_context_v3 and PRY_slot_contextLITE). Repeats of slot rasters are less common.

eis_l0_20090509_182435 - 24 repeats of PRY_slot_contextLITE for AR at limb

40" slot sit-and-stare#

266" slot raster#

266" slot sit-and-stare#

Flare and bright point trigger studies#

Long exposure times#

The longest exposure time that has been used is 600 seconds.

eis_l0_20130329_100736 - a 20"x512" raster run as part of HOP 226

Lunar eclipses#

Occasionally we see lunar eclipses from Hinode, and these can be useful for studying scattered light. Note however that the Moon moves very fast in these data-sets (around 200-300 arcsec per minute). The list below is not complete.

15-Jan-2010 - see EIS Software Note #12
21-Aug-2017 - Hara (2019, ApJ)

More information about the eclipses is available from the Hinode Daily Events page. For example, see the page for 26-Jan-2009. To check other dates, use the same link, but change the date in the URL.

Venus transit#

Hinode saw one Venus transit during the mission, from 5 to 6 June 2012. EIS mainly used the 40" slot, but there were two narrow slit data-sets obtained at the east and west limbs. Dave Williams prepared a Youtube movie showing the EIS data.

The EIS studies used were SI_Venus_slot_v1, SI_Venus_slot_v2 and SI_Venus_slit and SI_Venus_slit_v2, which were run between 21:05 UT on 5-Jun and 05:50 UT on 6-Jun.