M 13Posted By Mike Ratcliff |
Probably "transparency", meaning there may have been more water vapor or thin clouds this year. The Clear Sky Clock includes a transparency prediction. You can have high thin clouds that would be visible during the day but not noticeable at night.
Another possibility is that you were more in the sunshine during the day this year, that may have hurt your own night vision. Or maybe alcohol? 8)
PS, I assume you mean through similar size telescopes. Aperature makes a huge difference for globular clusters like M13.
Mike
Another possibility is that you were more in the sunshine during the day this year, that may have hurt your own night vision. Or maybe alcohol? 8)
PS, I assume you mean through similar size telescopes. Aperature makes a huge difference for globular clusters like M13.
Mike
) . I've been told it's a matter of getting used to eye and head placement and using the sliding guide. Did you experience this, at least at first?
) 