While visiting the Mayfield Gardens in Oberon, NSW, Australia,  I stayed at the high quality Beaconsfield Cottage in the rural area of Oberon.   The Cottage is located in a Bortle Class 2 light pollution area without major view obstruction by surrounding trees.  The milky way  was bright against a dark background.  The lights from the Cottage is ideal as the foreground of a full arched milky way panorama.   The foreground's light is not too bright causing image's highlight clipping but enables foreground shadows  to  recover reasonably well.  

Initially, I wanted to use the Benro Polaris star tracking mount to shoot multiple rows of pano images automatically with about 2 minutes exposure on each frame.  This offered about 3 stops better dynamic range compared to imaging without the star tracking.   That means,  at the same aperture of f/2.8, in stead of using ISO 3200 at 15 seconds, I could have used ISO 400 with 2 minutes achieving similar exposure. Unfortunately,  I have not figured out the connection fast enough to do that for a borrowed camera  that I used for the first time.  In the end, I used a tripod with a pano mount consisting of an index rotator rotating horizontally and a second index rotator rotating vertically. 

Using the Photopills phone app''s Fov component, Sony 35mm full frame lens  on a full frame Sony A7Riii CMOS camera has a Field of View of 35.5 degree horizontal and 54 degree vertical in a portrait position.   Allowing 40% overlap, the horizontal index rotator was preset at 20 degree and the vertical rotation of a second index rotator mounted on the panorama set was preset at 30 degree.  In total, 3 rows of portrait orientation image each with 9 columns of the milky way were imaged covering about 125 degree horizontally and 120 degree vertically.  A total of 27 images were captured within half an hour with each image exposed for 15 seconds at ISO 3200 at f2.8. 

The post processing involve using the Microsoft ICE software to stitch the 3 rows of 9 column images to form a large format panorama of the Milky Way.  The Photoshop's PSD file is around 64MB and the JPG insert in this page is about 1.6 MB.  Lightroom, Photoshop with StarXterminator and NoiseXterminator were used to refine the image during post processing.