Cassiopeia Observatory logo

iPhone 8 Plus Astrophotography: More Messier Globular Clusters

Posted: 26 October 2017

Open: Wednesday, 25 October 2017, 1808 MST
Temperature: 77°F
Session: 1156
Conditions: Clear, hazy

Equipment Used:
12" f/8 LX600 w/StarLock
2" 24mm UWA eyepiece
1.25" 40mm eyepiece
1.25" 15mm eyepiece

iPhone 8 Plus

1815 MST: LX600 ON, StarLock OFF, High Precision OFF.

Viewed Saturm 102X.

Next, viewed the Messier globular clusters M2 and M30, 102X. I would image both of these later this session.

Viewed the Moon, 102X and 61X.

Mounted the iPhone 8 Plus on the 40mm eyepiece using the Levenhuk adapter. Took this afocal 61X image of the Moon using the iOS app NightCap Camera:


Slewed to M2 (globular cluster) and SYNCed the AutoStar. Switched to 163X. The view of M2 was nice. Mounted the iPhone on the 15mm eyepiece.

1840 MST: StarLock ON. Took StarLock autoguided iPhone 8 Plus images of M2 and M30 globular clusters using NightCap Camera (Long Exposure, Light Boost, ISO 8000, 1/3sec, 1 minute exposure).



I discovered during post-processing that autoguiding was not very accurate. Will redo these images on a future session.

Slewed to the star Altair and SYNCed the AutoStar. Slewed to M71 (globular cluster). Needed to wait a few minutes for the object to clear the observatory dome. 1900 MST: StarLock OFF.

1935 MST: StarLock ON. Did this StarLock autoguided iPhone 8 Plus image of M71 globular cluster using NightCap Camera (Long Exposure, Light Boost, ISO 8000, 1/3sec, 1 minute exposure.


Autoguiding was better for this image.

1939 MST: StarLock OFF.

Viewed M71 (globular cluster), 102X.

Then viewed the open clusters M52, M103, and the Double Cluster, 102X. I plan to image these with the iPhone on the next session.

1948 MST: LX600 OFF.

Began closing the observatory after a long day of activities.

Close: Wednesday, 25 October 2017, 2000 MST
Temperature: 68°F
Session Length: 1h 52m
Conditions: Clear

Comments are welcome using Email. Twitter users can use the button below to tweet this report to their followers. Thanks.

Previous report

Cassiopeia Observatory Home Page

Back to Top

Copyright ©2017 Michael L. Weasner /